J-PARC
ANNUALREPORT
2 O O 9J A PA N P R O T O N A C C E L E R AT O R R E S E A R C H C O M P L E X

Editorial Board (April 2010 – March 2011)
Takashi KATO (Management Supporting Section)
Takahiro KOIZUMI (Public Relations Section)
Yoshihiro NAKANE (Safety Division)
Masahiro NOMURA (Accelerator Division)
Takahiro OKAMURA (Particle and Nuclear Physics Division)Toshiya OTOMO (Materials and Life Science Division) (Editor-in-Chief )Naohito SAITO (Particle and Nuclear Physics Division)Toshinori SUZUKI (Users Office Team)
Hiroshi TAKADA (Materials and Life Science Division) (Associate Editor-in-Chief )Kazufumi TSUJIMOTO (Transmutation Section)

Eminent figures including two Nobel Laureates, Makoto Kobayashi and Masatoshi Koshiba, on the stage of the inauguration
ceramony of J-PARC, which was held at Kudan Kaikan in Tokyo on July 6, 2009.
First neutrino event mesured at Super-Kamiokande, which is located 295 km away from J-PARC.
© Kamioka Observatory, ICRR (Institute for Cosmic Ray Research), The University of Tokyo & T2K Collaboration

J-PARC Annual Report 2009
Contents
Preface… …………………………………………………………………………………………………………

1

Accelerators… ……………………………………………………………………………………………………

3

Overview… …………………………………………………………………………………………………   4
LINAC… ……………………………………………………………………………………………………   6
RCS… ………………………………………………………………………………………………………   8
MR… ………………………………………………………………………………………………………   9
Materials and Life Science Experimental Facility… ……………………………………………………………… 11
Overview… ………………………………………………………………………………………………… 12
Neutron Source… ………………………………………………………………………………………… 14
Neutron Science… ………………………………………………………………………………………… 16
Muon Science… …………………………………………………………………………………………… 18
Neutron Device… ………………………………………………………………………………………… 20
Particle and Nuclear Physics… …………………………………………………………………………………… 23
J-PARC's Hadron Hall Takes Step forward to Particle Nuclear Physics Experiments … ……………………… 24
T2K experiment… ………………………………………………………………………………………… 26
Cryogenics… ……………………………………………………………………………………………………… 29
J-PARC Neutrino Beam Line Superconducting Magnet System… ………………………………………… 30
Development of Superconducting Solenoids for Muon Beam Lines at MLF… …………………………… 31
Superconducting Magnet R&D for COMET Experiment… ………………………………………………… 32
High Precision Superconducting Solenoid R&D for Muon g-2 Experiment… ……………………………… 32
Superconducting Kaon Spectrometer (SKS) … …………………………………………………………… 33
Cryogen Supply and Technical Support at Tokai Campus… ……………………………………………… 34
Information System… …………………………………………………………………………………………… 35
Overview… ………………………………………………………………………………………………… 36
J-PARC network (JLAN) growth… ………………………………………………………………………… 36
Starting to utilize KEK's Central computer system… ……………………………………………………… 37
Transmutation Studies… ………………………………………………………………………………………… 39
International ADS Workshop… …………………………………………………………………………… 40
Activities… ………………………………………………………………………………………………… 40
Safety   … ………………………………………………………………………………………………………… 43
Users Office … …………………………………………………………………………………………………… 47
User Program… …………………………………………………………………………………………………… 51
Organization and Committees… ………………………………………………………………………………… 55
Main Parameters … ……………………………………………………………………………………………… 61
Events ……………………………………………………………………………………………………………… 63
Publications… …………………………………………………………………………………………………… 71

J-PARC Annual Report 2009     Preface

1

PrefaceThis is the second Annual Report of the Japan Proton Accelerator ResearchComplex (J-PARC), which covers the period of fiscal year 2009.  During this period, J-PARC was finally completed, with neutrino beams in April of 2009 (after
the neutron, muon and kaon beams in the preceding fiscal year).  We have
moved, for the first time, into full operational mode.
The first achievement in this fiscal year was the successful operation of 120
kW at 3 GeV.  Prior to the summer of 2009, we have suffered for a long timefrom an RFQ problem (involving one of the Linac elements).  Utilizing the summer shutdown we improved the vacuum of the RFQ system and finally solved
the major problem.  At this moment, the availability of the accelerator is up to
90-95%.
Also, the first neutrino beam was detected at SuperKamiokande in February 2010.  Since then, the neutrino data acquisition has been progressing
rather smoothly.
In the hadron hall we obtained a very good kaon separation with a static separator.  A high efficiency for slow extracted beams of up to 98.5% wasreached in the Main Ring.  Many experimental groups are preparing to commence data acquisition using these long-spill beams from the Main Ring.
Concerning the 3 GeV, a smooth operation of beams of up to 120 kW produced many productive data for both muons and neutrons.  Specifically, thePreface      J-PARC Annual Report 20092

neutron beam lines have already produced data in several areas including
magnetism, distortion, complicated crystal structure, protein and other molecular data, etc.  Some data have already been published and many otherresults are being prepared for publication.  Currently, 18 out of 23 beamlines
have already received funding for neutrons, while only one beam line out offour has been funded for muons.
One of our goals is to make this facility available internationally.  We madea lot of effort to internationalize the J-PARC facility.  First, the Users Office has
been strengthened.  We are building new lodging (about 50 dorm rooms will
be completed in December 2010).  We are asking the local Village and the local
Government to cooperate with us in accommodating a large number of foreign visitors.  In addition to the internationalization, efforts have been madeas well to open this facility to industrial companies.  Finally, the central Government has been constantly supporting J-PARC by increasing the amount offunding.
From now on, our most important mission will be to produce the best
scientific results from J-PARC.

Shoji Nagamiya
Director of the J-PARC CenterLinac3 GeV RCS
50 GeV MR

Accelerators

Accelerators     J-PARC Annual Report 20094

Overview
The main events of the accelerators’ operations are summarized inTable 1.  The first half of the time wasspent on conditioning and improvement against the discharge of theradio-frequency quadrupole (RFQ)
linac with efforts to show a maximum
performance under the miserable situation.   This effort resulted in steadyprogress of the recovery from the discharge and the 120-kW operation of
rapid cycling synchrotron (RCS) for
Materials and Life Science Experimental Facility (MLF) user runs started in

November 2009.  Then the 300 kW operation (2.7 × 1013 protons/pulse) for
MLF was successfully demonstrated
on December 10th.   This operation
was limited to one hour, from 10:45 to
11:45, because the maximum intensity
officially permitted was 250 kWh in every hour.
The beam services of Main Ring
(MR) started in October to Hadrontarget and in November to Neutrino
target, the typical beam power levels were 1.2 kW and 20 kW with 6
bunches, respectively.  The tuning of

MR-Fast Extraction (MR-FX) toward
100 kW power had been in progress.
On February 27th, 7.3 × 1013 protons
were extracted to the Neutrino target
that corresponds to 100 kW if operated
with a repetition period of 3.52 s.
The availability was ~ 92.4 % in MLF
user runs from November (Run #27) toJanuary (Run #29) for the total beamon time of 842.3 hours.  The statisticsof accelerators’ operation are 253 days
in total, 69 days for MLF user runs, 24days for Hadron and 24 days for Neutrino.

Table 1. Operation schedule and typical achievements in fiscal year 2009.
J-PARC Accelerator Operation in FY 2009
Month

4

5

6

23

24

25

7

8

9

10

11

12

1

2

3

26

27

28

29

30

31

Operation
Run #LINAC Beam

mA

5

5

msec

0.1

0.1

15

RFQ Conditioning

Trial of Continuous Operation(for recovery)
MLF User Run

0.1 ~ 0.5

0.1

Cryopump(results in succesful recovery)

5 kWPower (approved)(250 kW)

20 kW

120 kW
12 / 10 : 300 kW

1 hr

Official Investigation

MR Study
MR - Slow Ext.

(5 kW)

Achieved Power

1 kW ~ 3 kW
12 / 7 : K0 Beam

MR - Fast Ext.
Achieved Power(1.2 kW)

20 kW (==>50~100 kW)(100 kW)First Beam(Maximum performance under miserable situation)

11 / 22 : - Events @ Near Detector

2 / 24 :@ KAMIOKANDE

J-PARC Annual Report 2009     Accelerators

5
The costs and issues were reinvestigated for the designed goal of 1 MW in RCS and 0.75 MW in MR-FX by taking into
account the construction time and the necessary progress in the understanding and control of the beam. The essence issummarized in the following figure and table.

1.0

RCS Power For MLF

Beam Power [MW]0.8

MR-FX Output Power

0.6

0.4

0.2

300 kW (One Shot)
300 kW 1 hour
120 kW User Run began
100 kW 1 hour

0.0

JFY2008

100 kW (6bunches)
30 kW User Run began

JFY2009

JFY2010

JFY2011

JFY2012

JFY2013

JFY2014

2012

2013

Fig. 1.  Road to 1 MW in RCS and 0.75 MW in MR-FX.

Table 2. Schedule of Linac, RCS and MR.
JFY

2008
400 MeV

LINAC

2009

2010

2011

[Peak Current 50 mA]
SystemConstruction

400 MeV Inj.
RCSInstallation
High Power Test

Components Construction

Construction & Tuning

Correction Mag.

Machine Study & Design

12th RF Cav.
RF Cavity

Cavity #1 -#4.

Cavity #5.

2nd Harmonic Cav. #1

Operation
Operation

Beam Commissioning / Operation

Construction / Installation / Beam Commissioning / Operation
Construction & Installation
Cavity #6.
2nd Harmonic Cav. #2
Septum Magnet #1 Septum Magnet #2

Injection
MR
Installation

Installation

BeamCommissioning

2014

Extraction

Kicker Magnets

Septum Magnets Septum Magnets

Collimator

3-50BT

Ring

Beam Commissioning / Operation
2nd Harmonic Cav. #3

Many issues
to be solved

Accelerators     J-PARC Annual Report 2009

6

LINAC
The linac beam test started in November 2006 and a 181 MeV beam was
successfully accelerated in January
2007.  Since then, the linac has delivered beams for commissioning of thelinac itself, downstream acceleratorsand research facilities.  Trip rates for the
RFQ, however, unexpectedly increasedin September 2008, and this situation
has been disrupting the operations of
the user runs.
We assumed that the problem
came from damages done during theoperation and conditioning, because
previously we had been operating the
RFQ for hundreds of hours without any
trouble.  After the trouble, we applied
several measures such as changing the
RF interlock setting, better suppression of unexpected beam injection,
reduction of vane voltage and improvement of the vacuum properties.
In March 2009, we added two ion
pumps to the RFQ, one turbo molecular pump in the LEBT (Low Energy
Beam Transport), an orifice in the LEBT

to reduce gas flow, and a moisture filterin the hydrogen gas system of the ion
source.   For diagnostics we installeda cold cathode gauge and a quadrupole mass analyzer.  We undertook asecond vacuum system improvement
during the summer shutdown.   Wereplaced the oil rotary pumps with oilfree scroll pumps.  Also, we replaced
the old LEBT chamber with a new cleanchamber with a divider plate which
had an orifice for differential pumping.  
A cryopump was installed on the RFQ
side and a 1500 l/s turbo molecularpump on the ion source side.  In July
we began a 10 day baking process toaccelerate the degassing (see Fig. 2).
To reduce the unscheduled beam
shutdowns, which the users naturally
dislike, the conditioning days for RFQ
clean up are scheduled in the operational calendar.  At first, we set cyclesof 2 or 3 days of operation followed by
one conditioning day.   In November,based on the stable operation of the
RFQ at 20 kW in October, we tried toincrease the beam power for the MLF
user operation; increasing the beampulse length from 0.1 to 0.2 ms, andthe peak beam current from 5 to 15
mA, thus reaching a 6 fold increase
from 20 to 120 kW.  We were able to deliver a beam to MLF users without incident.  In December we demonstrated
300 kW operation for one hour to the
MLF.  The linac and the RFQ delivered
the beam with a pulse width of 0.5 ms,
which was the full design specification.
The results verified the restoration of
the RFQ as well as the 3 GeV RCS performance.
A compromise was made duringphase 1 by limiting the linac energy
to 180 MeV.   Now, funding has been
secured to increase the energy of thelinac to 400 MeV as originally intended.  This is one of the requirements forachieving the predicted 1 MW power
level in the RCS or 0.75 MW in the MR.
The upgrade process is under control
and the installation is planned for thesummer shutdown in 2012.  Procure-䋺 IMPROVED ITEMSDOWN SIZED ION
SOURCE APERTURE

IMPROVED ON MAR. 2009ORIFICE

RFQ VACUUM CHAMBER
ION
SOURCE

BEAM
GV

GV

H2 GAS

MOISTURE
FREE FILTERIMPROVED ON SEP. 2009

㽲 REDUCE GAS FLOW FROM.
UPPER STREAM.
㽳 ADOPT MOISTURE FREE FILTER.
㽴 OIL FREE ROUGH PUMP SYSTEM.

IMPROVED ON JUL. 2009

RFQ PUMP SPEED [l/sec]䋺 3,300

12,500ION SOURCE PUMP SPEED [l/sec]䋺 6,000

Fig. 2.  Diagram of vacuum system.

9,000

J-PARC Annual Report 2009     Accelerators

7
ment and fabrication of the major
components of the 400 MeV energy
upgrade are being performed.   TheR&D module consisting of accelerating
and coupling segments with tuners
has been built.   Off-line high-power

tests of the annular-ring coupled structure (ACS) module have been successfully performed.  These tests validated
the fabrication technology based on
simplified machining of the accelerating cells developed for the mass pro-duction of the ACS accelerating cells.  
In addition, the operation of the tuners
at high-power level has been successfully demonstrated.

Table 3.  Evolution of RFQ and Linac.
Date

Event

RF/beam widths(µs)

Peak cunent(mA)

Sept. 2008

Trip rate increase

200/100

5Nov.

Pwr@MLF(kW)

Condition or Cont.
op. days
Very Poor

Improvement: interlock, conditioning, etc.

Dec.

MR study and MLF user program after
conditioning

155/100

5

20

Poor

Jan. - Feb. 2009

Conditioning and operation user program wascancelled

155/100

5

20

Poor

20

2

Mar.

Vacuum system improvement, Conditioning procedure changed

April.

Tank level was decreased from 102 to 95%

Jun.
Jul. - Sept.

MLF user program

155/100

5

Vacuum system improvement, Cryo, Pumps, baking, oil-free pumps

Sept.

Conditioning

Oct.

MLF user program

155/100

5

20

2

Nov.

MLF user program

255/200

15120

2 to 32 to 3Dec.

MLF user program

255/200

15

120

Dec.

MLF high power demonstration (1 hour)

555/500

15

300

Jan. 2010.

MLF user program

255/200

15

120

3

Jan.

Demonstration of continuous operationfor 6 days

255/200-555/500

15

120

6

Feb.

MR and HD/NU study, beam delivery

255/200-555/500

15

Cancelled

7 to 6

Apr. - May

MLF and MR(NU) beam delivery

255/200-555/500

15120

13 (Max.)

Photo 1.  R&D module of ACS.

Accelerators     J-PARC Annual Report 20098

RCS
eventually stabilized.
The maximum residual activation
became a level of about 1.5 mSv/hafter 2-weeks user operation with
120 kW and high power operation of
300 kW for 1 hour.  These activations
were measured through a contact on
the vacuum chamber 6 hours after
completion of the beam operation.
Since the beam loss was proportional
to the number of the stripping foil hits
from beam studies and simulations,
it was concluded that the large angle

events with Coulomb scattering madea hot spot at the H0 branch and the entrance of quadrupole focusing magnet(QFM) at the injection section.  In orderto reduce these beam losses, the number of foil hits should be reduced by atransverse painting injection and by
optimization of the foil size.  It will be
expected that with the new foil, whichis to be installed during 2010 summer
shutdown, the number of foil hits will
be reduced to less than a half.

310

300 kW

248

Beam Power [kW]The RCS has been operating forthe neutron and muon user programat MLF since December 23rd, 2008.
The RCS operations were not only supporting the MLF but also were providing beams for the MR user program.  In
parallel we took on the challenge torealize higher beam power operations
with better stability.
Figure 3 shows the one-hour average power and the integrated power
for the MLF user operation in Japanfiscal year 2009.  Before the 2009 summer shutdown, the beam power was
limited by the front end of about 20
kW, after that shutdown the RCS has
been operating at a beam power levelof more than 100 kW for MLF users. After the beam delivery operation to the
MR and MLF, while the priority was given to their beam tuning, the RCS has
also continued further beam studies
to achieve higher beam intensity.  On
December 7th, 2009, the RCS reachedbeam power of more than 300 kW tothe neutron production target with 25
Hz for 1 hour, shown in Fig. 4.  There
were 3 occurrences of beam drop
within an hour, but the operation was

186

124

62

12/10/2009
0
10:39

11:39

11:09

Time

Fig. 4.  High power operation of 300 kW for 1 hour.

㪉㪌㪇㪈㪇㪇㪇㪇㪇
㪐㪇㪇㪇㪇㪩㪚㪪㩷㪙㪼㪸㫄㩷㪧㫆㫎㪼㫉 㪉㪇㪇㪐㪆㪋㪆㪈ޯ㪉㪇㪈㪇㪆㪊㪆㪊㪈㪏㪇㪇㪇㪇㪩㪚㪪㪶㪙㪼㪸㫄㪶㪧㫆㫎㪼㫉㪩㪚㪪㪶㪙㪼㪸㫄㪶㪧㫆㫎㪼㫉㪶㪠㫅㫋㪼㪾㫉㪸㫃

㪎㪇㪇㪇㪇

㪈㪌㪇

㪍㪇㪇㪇㪇
㪌㪇㪇㪇㪇

㪈㪇㪇

㪋㪇㪇㪇㪇
㪊㪇㪇㪇㪇

㪌㪇

㪉㪇㪇㪇㪇
㪈㪇㪇㪇㪇

㪇

㪇
㪌㪆㪈㪆㪉㪇㪇㪐

㪍㪆㪊㪇㪆㪉㪇㪇㪐㪏㪆㪉㪐㪆㪉㪇㪇㪐㪈㪇㪆㪉㪏㪆㪉㪇㪇㪐㪈㪉㪆㪉㪎㪆㪉㪇㪇㪐㪉㪆㪉㪌㪆㪉㪇㪈㪇㪛㪘㪫㪜

Fig. 3.  1-hour average power and integrated power for MLF user operation for this one year.

㪠㫅㫋㪼㪾㫉㪸㫃㩷㪧㫆㫎㪼㫉㩷㩿㫂㪮㪀㪧㫆㫎㪼㫉㩷㩿㫂㪮㪀㪉㪇㪇J-PARC Annual Report 2009     Accelerators

9MR

Photo 2.  The newly installed RQ (Ripple Quadrupole), one of feedback
quadrupoles for the slow extraction.

Beam intensity [ 1013 ppp]

20
4

10

2

0
0

1.0

2.0

Time [sec]Fig. 5.  Kinetic energy and circulating beam intensity in the
100 kW demonstration of the fast extraction.

0.3

30

0.2

20

0.1

10

0
0

1.0

2.0

3.0

4.0

Kinetic energy [GeV]30
6Kinetic energy [GeV]80signal is fed into the DSP system andcurrent patterns of the correction aresent to the power supplies of the feedback quadrupoles.  The quadrupoles,
named “Extraction Q” and “Ripple Q”(Photo 2) are designed to make a constant spill shape in the overall timeof the extraction and to compensate
the fine ripple structures, respectively.  Figure 6 shows a typical beam
intensity of the SX operation with the
feedback system.  After the beam acceleration reaches 30 GeV, the beam
is extracted for 1.7 s.  The cycle time
for the slow extraction operation is 6
s.  The extracted beam power is 1.9 kW
in this figure.  The maximum intensity
delivered to the HD facility by the endof Japan fiscal year 2009 was 2.6 kW.

ure 5 shows a typical beam intensity inthe high power demonstration together with the kinetic energy of the beam.
The number of particles extracted tothe abort line is 7.2 × 1013 protons per
pulse. It corresponds to ~100 kW if operated in the 3.52 s cycle.  Beam loss isalmost localized on the collimator section in the injection timing.  The loss isabout 7.7 × 1011, which corresponds to~100 W, while the design capability of
the collimator currently is 450 W.
The SX system delivers the beam
to the Hadron (HD) experimental facility. In the 2009 summer shutdown,
we installed a spill feedback system,
which consists of two types of quadrupoles and a Digital Signal Processing (DSP) system.   The beam spill

Beam intensity [ 1013 ppp]

The MR has three-fold symmetry
and its circumference is 1567.5 m. Three
dispersion-free 116-m-long straightsections are dedicated to “injection
and beam collimators”, “Slow Extraction (SX)”, and “RF cavities and fast extraction (FX)”, respectively.  The MR isthe first large proton accelerator that
adopts a lattice configuration withimaginary transition energy.   It does
not have the transition crossing between the injection and the extractionenergies.  
The fast extraction system delivers the beam to the neutrino beamline for the T2K (Tokai-to-Kamioka)
experiment.   The beam commissioning of the neutrino beam line began in
April 2009.  After intensive beam studies of the MR and the neutrino beamline, the T2K collaboration started theacquisition of physics data in January
2010.  The cycle time for the FX operation is 3.52 s including an acceleration
time of 1.9 s and flat top of 0.15 s.  Beamintensity of 40 kW in maximum wasdelivered to the T2K experiment by
the end of Japan fiscal year 2009.
We have performed a demonstration of high power beam operation of
the MR with single shot mode.  In thisdemonstration, the beam is extracted
to the abort line by the FX system.  Fig-

0Time [sec]Fig. 6.  Kinetic energy and circulating beam intensity in theusers operation of the slow extraction.

Materials and Life Science
Experimental Facility

Materials and Life Science Experimental Facility     J-PARC Annual Report 200912

Overview
At the Materials and Life Science
Experimental Facility (MLF), 9 neutron
instruments are open for general use
and 3 are at the commissioning stage infiscal year 2009.  In addition, 6 neutron
instruments have been newly budgeted so that a total of 18 beam lines areeither working or budgeted out of 23
available ports.  At the decay muon line
(D-line), the commissioning was started
at the D2 instrument while the D1 instrument has been open for generaluse since preceding fiscal year. About
250 proposals were collected throughthe year, more than 30% of them werefrom industrial users.
We are pleased to announce thatsince November 2009 the proton beam
intensity delivered to the neutron andmuon production targets was not only
ramped up to 120 kW but the high availability at around 86 to 92 % was also accomplished for the user program.  The120 kW stable operation has inspired
both instrumental scientists and users.  
Experiments with small-size samples
and/or higher resolution experiments,
etc., which cannot be carried out withthe 20 kW beam, have been realized.
This exciting event came up on
December 10th.   It was an operation
which used beam power of 300 kW, thehighest to date.  It was found that theneutrons emitted from the hydrogenmoderator toward the unit at an solid
angle per pulse increased up to 5.1×1012,
and the general purpose µSR spectrometer (DΩ1) at the surface muon

experimental area recorded 4.5×106/s,(1.8×105 per pulse) of surface muons.  
As shown in Fig. 1, the neutron andthe surface muon intensities obtained
at J-PARC reached at that moment theworld’s highest level compared withother pulsed source facilities.
Unfortunately, from February to
March of 2010 the user program wascancelled due to a problem, which occurred in a cryogenic hydrogen loop
for moderators.  Eventually, the problem was repaired and the user program
resumed from May, 2010.  The year of
2009 has given us very satisfying experiences and it also stimulated us to takefurther steps toward achieving an operation with a high power beam.

Table 1.  Beam up rate for user program in the Japanese fiscal year 2009.

No. of run cycle#24-25
#26
#27
#28
#29
#30-31

Duration
09/05/28 18pm - 06/22 07am
09/10/12 12pm - 10/23 07am
09/11/10 13pm - 11/26 07am
09/12/08 12pm - 12/24 07am
10/01/17 13pm - 02/03 10am

18×1012

Scheduled Time (h)
394
183
270
273
297
Canceled

Availability (%)
75.1
84.3
86.3
92.6
89.7

180,000
Number of neutrons per pulse
unit: n/(srῒpulse)

Number of muons per pulse
unit: n/pulse

5.9×1012
5.1×1012

SNS, US

30,000

ISIS, UK

J-PARCRIKEN-RAL, UK

160
kW

Dec. 2009 300 kW

Goal 1,400 kW

4.0×1012

Goal 48 kW

J-PARC

Dec. 2009 1,000 kW

Goal 1,000 kW

Dec. 2009 300 kW

4.2×1012

Fig. 1. Comparison of neutron and muon intensities among major pulsed neutron/muon facilities in the world (as of December 2009).
Low repetition rate of 25 Hz at J-PARC compared to 60 Hz of SNS and 50 Hz of RAL is a reason for the increasing number of neutrons and muons in eachpulse.  An unique moderator shape and a new neutron absorbing material of Ag-In-Cd alloy also contributed the increase of the neutron intensity.  Theimprovement of the DC separator increased the muon intensity at the D-line.

J-PARC Annual Report 2009     Materials and Life Science Experimental Facility

13

Commissioning

BL08: S-HRPD

BL05: NOP

Under construction

BL09: SPICA

BL04: ANNRI

BL10: NOBORU

BL03: iBIX

Under construction

Under construction

BL02: DNA

BL11: PLANET

Commissioning

BL01: 4SEASONS

BL12: HRC

Proton beam line

D1 instrument
Commissioning

Commissioning

D2 instrument

BL21: NOVA
BL20: iMATERIA

BL14: AMATERAS

BL19: TAKUMI
Under construction

Under construction

BL15: TAIKAN

BL18: SENJU

Under construction

BL16: ARISA-II

BL17: VNR

Neutron instruments
Moderator

StatusBL01

BL

4SEASONS : 4D Space Access Neutron Spectrometer

Name of Instruments

Coupled

In use

BL02

DNA: Biomolecular Dynamics Spectrometer

CoupledUnder construction

BL03

iBIX : IBARAKI Biological Crystal Diffractometer

Coupled

In useBL04

ANNRI : Neutron-Neucleus Reaction Instrument

Coupled

In useBL05

NOP : Neutron Optics and Fundamental Physics

CoupledCommissioning

BL08

S-HRPD : Super High Resolution Powder Diffractometer

Poisoned

In useUnder construction

BL09

SPICA : Special Sample Environment Neutron Diffractometer

Poisoned

BL10

NOBORU : NeutrOn Beam-line for Observation & Research Use

Decoupled

In useBL11

PLANET : High Pressure Neutron Diffractometer

Decoupled

Under construction
Commissioning

BL12

HRC : High Resolution Chopper Spectrometer

Decoupled

BL14

AMATERAS : Cold-Neutron Disk-Chopper Spectrometer

Coupled

In use

BL15

TAIKAN : Smaller-Angle Neutron Scattering Instrument

CoupledUnder construction

BL16

ARISA-II : High-Performance Neutron Reflectometer with a Horizontal Sample Geometry

Coupled

In useBL17

VNR : Reflectometer with Vertical Sample Geometry

CoupledUnder construction

BL18

SENJU : Single Crystal Neutron Diffractometer under Extreme Condition

Poisoned

Under construction

BL19

TAKUMI : Engineering Materials Diffractometer

Poisoned

In useBL20

iMATERIA : IBARAKI Material Design Diffractometer

Poisoned

In useBL21

NOVA : High Intensity Total Diffractometer

Decoupled

Commissioning

Muon instruments
BL

Name of Instruments

StatusD1

D1 instrument

In useD2

D2 instrument

Commissioning

Fig. 2.  Status of the neutron and muon instruments at the MLF as of March, 2010.

Materials and Life Science Experimental Facility     J-PARC Annual Report 200914

Neutron Source
Characteristics of the neutron
beam delivered to the users
Since 2008, through operation cycles under low
beam power of up to 20 kW, a delegation of neutron
measurements has been carried out at the neutron instruments for the purpose of characterizing
the neutronic performance of the three distinctivehydrogen moderators arranged at the top and thebottom of the neutron production mercury target.
The measured neutron spectral shape and the pulse
shape were reproduced very accurately by the calculation using the PHITS code as shown in Fig. 3,
proving that the neutronics design calculation wasappropriate.  The measured data would be useful
not only for the users to understand the source characteristics but also for the instrument scientists to
examine the beamline components alignment.

Fig. 3.  Absolute neutron spectral intensity measured with a current-modetime-of- flight technique using scintillators (open circle) and a He-3
detector (open triangle).  The calculated results from a Monte-Carloparticle transport code PHITS are also displayed, showing good
agreement with the measured results within ±30%.

Progress of the 3 GeV proton beam transport facility.
The 3 GeV proton beam transportfacility (3NBT) has been fully operational
since the beam commissioning started
and its reliability has been extremely
high.   The properties of the protonbeam, such as β functions and emittances, were studied and confirmed tobe very consistent with the original design values.
An activation method was applied
to measure the two-dimensional proton
beam profile on the mercury target ves-

sel.  The residual dose rate is thought tobe representative of the beam profile,since the proton beam is very stable.  An
Imaging Plate has been placed on the
proton entrance side of the target vessel and exposed to the radiation fromthe vessel for a few minutes.  The mapof the dose rate after the 120 kW beam
operation is given in Fig. 4.  It was provedthat the proton beam was normally distributed both in horizontal and verticaldirections and no skew was observed.

The projections of the proton beamprofile onto the horizontal and verticalaxes can be measured with multi-wire
profile monitors (MWPM) in the proton
beam window assembly.  The MWPM’s
are continuously providing data during
beam operations, which show beam
distributions consistent with the resultsof the activation method.  Their reliabledata have been therefore used for proton beam diagnosis.

Fig. 4.  Radiation dose plot on the proton entrance side of the target vessel
obtained with an Imaging Plate after the 120-kW beam operation.

J-PARC Annual Report 2009     Materials and Life Science Experimental Facility

15

Demonstration of components’ operation under a 300 kW proton beam
fluctuation for the 300 kW proton
beam injection was about 15 kPa at
maximum, which suggested that theestimated value at the 1 MW beam operation could be lower than the design
criteria of 50 kPa.

Beam ON

60

5

55

4
3
2
1

1.46

0

50
45
40

900

Beam power (kW)

1.48

6
Accumulator level (mm)1.50Heater power (kW)

1.52

Pressure (MPa)On December 10, 2009, the neutron production mercury target experienced the high power proton beam
operation at 300 kW for the first time.  It
was a short-term test operation which
took only one hour.  Nevertheless, werecorded promising performance data
for the target vessel and the cryogenichydrogen loop for moderators towards
the operation under the rated beam
power of 1 MW.  The cryogenic hydrogen loop activated its pressure control
system through a passive volume control using an accumulator and a heater
so that the pressure change causedby the heat deposition of the secondary particles could be suppressed as
designed.   The measured pressure

Accumulator

600

HeaterPressure fluctuation

300

35
30

Beam OFF

Proton beam injection

0
0

5

10
15
Operation time (min)20

Fig. 5.  Pressure control in the cryogenic hydrogen loop through a passive volume control
using an accumulator and a heater at 300 kW beam operation.

Progress of the next generation Mercury target development
The microbubble injection technology for mitigating pressure waves
induced in the mercury flowing target
vessel has been in the process of successful development.  The multi typeswirl bubbler producing micro-bubbles
with optimal radii less than 50 µm forthe pressure wave mitigation was developed and demonstrated using thereal size mercury loop at the Oak Ridge
National Laboratory under a joint ven-ture research and development of thespallation neutron source between
J-PARC and SNS.  The experimental results indicated that a proper amount of
microbubbles could be distributed in
the target vessel through the proper arrangement of the bubbler installation
position.
On the other hand, the first sparetarget vessel (see Photo 1) and its storage container were prepared, in which

Photo 1.  Spare target container.

the issues of the fabrication of the existing target vessel were scrutinized.  Thestructure design of the rear part was revised to eliminate the outer shroud andthe inner mercury vessel was substituted by thick pipes to reduce the fabrication cost without sacrificing safety.  We
are in the process of designing a next–
generation target whose rear part canbe separated from the front portion.

Photo 2.  Target model used for performance tests of
microbubble injection device.

Materials and Life Science Experimental Facility     J-PARC Annual Report 200916

Neutron Science
Status of instruments
In fiscal year 2009, we called the
J-PARC general user proposals for nine
instruments, 4SEASONS (BL01), iBIX
(BL03), SuperHRPD (BL08), NOBORU(BL10), AMATERAS (BL14), ARISA-II(BL16), TAKUMI (BL19), iMATERIA (BL20),
as well as the Ibaraki prefecture generaluser proposals for industrial uses in iBIX
and iMATERIA.  The commissioning of

NOP (BL05), HRC (BL12), BL21 (NOVA) isin an advanced stage and these instruments are expected to be available forgeneral use in the next year.  Construction of the following six instruments
has already started: DNA (BL02), SPICA(BL09), PLANET (BL11), TAIKAN (BL15),
VNR (BL17), and SENJU (BL18).  Those 18
instruments are shown in Fig. 2.  During

the instrument construction, we madea progress in the development of thecomputing environment (data acquisition, analysis, device control, data baseand etc.), standardization of sample
environment, choppers (T0, Fermi anddisk choppers) and other devices.

New measurement with event-recording data acquisition system
The event-recording data acquisition system of MLF has accomplishedflexible neutron measurement.   Oneof the examples is the repetition rate
multiplication (RRM).   Through RRM
with the monochromating chopper,
we could obtain multiple data with different incident energies (Ei ’s) simultaneously (multi-Ei measurement).  Thismethod allows observing a wide energy range with reasonable energy resolution.  The multiplicity factor can be
regarded as an additional gain factor of
the present pulsed spallation neutron
source (JSNS) at MLF since the single-Ei
measurement was normal before JSNS.  

An event-recording system is essential
for RRM because the flexible setting of
the Time-of-Flight time channel width
realizes a reasonable energy resolutionof each Ei.  The first demonstration result
on 4SEASONS (BL01) of the RRM technique by a Fermi chopper spectrometeris shown in Fig. 6, it proved its high potential in inelastic scattering measurements.   The result was published as
the honorable first paper with neutron
scattering data in MLF [M. Nakamura etal., J. Phys. Soc. Jpn. 78 (2009) 093002].
The observations of time-transientphenomena are also a good target ofthe event-recording system.   Figure 7

Fig. 6.  Magnetic scattering spectra of CuGeO3 below the spin-Peierls
transition temperature measured on 4SEASONS, where the data at
4 different incident neutron energies of (a) Ei = 152.0 meV, (b) 45.6
meV, (c) 21.6 meV, and (d) 12.6 meV are obtained simultaneously.  
With decreasing the incident neutron energy Ei the observation
range is zoomed up within three steps.  The energy resolution at
12.6 meV is 40 times higher than that at 152.0 meV.

shows an in-situ experiment programwith changing temperature and (compressive) load (a), and diffraction pattern(b) obtained during the measurement
Takumi (BL19).   In this case, the heating/compression test is conducted in asynchronized time during diffraction
measurement.   The data are sliceableaccording to time, temperature, loador statistics.   The event-mode system
is very useful for such type of measurement in the sense that we can manipulate data even after the measurement isfinished, and this will let us take a maximum advantage of the diffraction data.

Fig. 7.  Result of the neutron diffraction measurement underhigh temperature and compression loading.   (a) Temperature and compression load profile.   (b) Time-TOF
2-dimensional diffraction pattern.

J-PARC Annual Report 2009     Materials and Life Science Experimental Facility

17
Fig. 10

Water immersion of PMMAARISA-II (BL16) is a reflectometer with horizontal sample geometry.  Water immersion andthermal annealing effect is observed through
ARISA-II.  A deutrated polymer (poly (methyl
methacrylate); PMMA) layer was put on a normal polymer film, and the structure changes ofthe surface polymer layer were observed after
water immersion and thermal annealing (Fig.
8).  By analyzing these data, it was shown thatthe annealing effect of these two treatments
were almost the same (Fig. 9), even though water is a non-solvent for PMMA. [A. Horinouchi etal., Chem. Lett. 39 (2010) 810-811.]

Fig. 10

Reflectivity of polymer bilayers as prepared, after water immersion, andReflectivity of polymer bilayers as prepared, after waterand after
thermalannealing.
Fig.immersion,
11 Scattering
lengthdensity
profile at the surfaces of polymer bilayers evalFig. 8.  Reflectivity of polymer bilayers as Fig. 9.  Scattering length density profile
prepared, after water immersion,at the surfaces of polymer bilayers
and after thermal annealing.
evaluatedby reflectivity
analysis.
Internal strainof superconducting
cable

Residual strain measurements in International Thermonuclear Experimenta(TF) conductor (Fig. 12) was investigated on TAKUMI (Fig.13). The ITER TF

Conductors (CICC) composed of 900 Nb3Sn strands, 522 copper strands, a cInternal strain of superconducting cable
Residual strain measurements in
the International Thermonuclear Experimental Reactor (ITER) Toroidal Field(TF) conductor (Photo 3) was investigated on TAKUMI (Photo 4).  The ITER
TF conductor is a Cable-In-Conduit

stainless steel circular jacket. Although it is well known that the superconducting
significantly depending on the presence of internal strain, the internal strain ofbeen measured
so far becauseof thecabling
configuration,of
their location in a jac
dependingonthepresence
Conductors (CICC) composed of 900 cantly
Nb3Sn strands, 522 copper strands, a the internal strain, the internal strain ofcentral spiral and a type 316LN stain- strands in the conductor has not beenless steel circular jacket.  Although it is measured so far because of the cables’
well known that the superconducting configuration, their location in a jacket
Fig. 11 Scattering length density profile at the surfaces of polymer bilayers evaluated by reflectivity analysis.
properties of Nb3Sn strands vary signifi- and the low volume fraction of Nb3Sn.

Internal strain of superconducting cable
Residual strain measurements in International Thermonuclear Experimental Reactor (ITER) Toroidal Field(TF) conductor (Fig. 12) was investigated on TAKUMI (Fig.13). The ITER TF conductor is a Cable-In-Conduit
Conductors (CICC) composed of 900 Nb3Sn strands, 522 copper strands, a central spiral and a type 316LN
stainless steel circular jacket. Although it is well known that the superconducting properties of Nb3Sn strands varysignificantly depending on the presence of internal strain, the internal strain of strands in the conductor has notbeen measured so far because of the cabling configuration, their location in a jacket and the low volume fraction

Due to its high intensity and low background, TAKUMI
has successfully measured the diffraction peaks of Nb3Sn
phase.  The observed peaks from Nb3Sn phase were subsequently fitted to determine the lattice spacing, and thenthe reliable residual strains could be evaluated by comparing with the strain-free Nb3Sn filament extracted from the
ITER TF conductor (Fig. 10).  Further results have been reported [T. Hemmi, et al., submitted to IEEE Trans. Appl. Supercond.].  Data from the neutron diffraction experimentsherewith can be anticipated to help clarifying strain statesin coils for 100 kA class fusion reactors.

Photo 4.  Experimental set-up of strain measurement in ITER TF conductor.

1.5
Intensity (a.u.)

Photo 3.  Cross sectional views of the ITER TF conductor andNb3Sn strand.

Nb 3Sn (211)
Nb3 Sn in the CICC

1.0

Strain-free Nb 3Sn(Nb3 Sn filaments )

0.5

0.0

Compressive strain

0.214

0.216
0.218
Lattice spacing (nm)Fig. 10.  Difference in the lattice spacing of the Nb3Sn
in ITER TF conductor and the strain-free Nb3Sn
filaments extracted from the Nb3Sn strands.

Materials and Life Science Experimental Facility     J-PARC Annual Report 200918

Muon Science
Muon beam lines and their optimization and improvement
After the extraction of the first muon
beam in the summer of 2008, the Muon
Science Establishment (MUSE) group at
J-PARC has been optimizing the magnet
settings and parameters to maximize
the intensity of the muons extracted in
the Decay Muon line (D-line).
The muon beam profile monitor(MBPM), which consists of two sets of
16 scintillator strip arrays positioned
perpendicular to each other (Fig. 11) isa powerful tool to determine the location and the shape of the muon beam.
[P. Strasser et al., Phys. Conf. series 225,
012050 (2010).]  The advantage of thebeam profile monitor is its response
speed; it returns the beam profile instantly, in contrast to an imaging plate(IP) that requires an off-line readout
process using a dedicated machine.  
The electric current settings of the 18
quadrupole magnets, 3 bending magnets and one superconducting solenoid magnet have been optimized
according to the beam profile mea-

sured by MBPM (Fig. 12).
During the analysis and optimization of the beam line components, it
became clear that the gap between theelectric plates (10 cm) of the electrostatic(DC) separator is too small to accept thefull muon beam profile.  We manufactured a new DC separator with a wider
gap of 20 cm (Photo 5), and installed it in
the D-line in the summer of 2009.

Y15

Y-axisØ150mmY1
Scintillation Counterst(0.5mm )X1

X15

Optical Fibers(Ø1mm x 7)

X-axisHamamatsu
Multianode
PMT (4x4)
Fig.11.  Schematic view of the muon beam profile monitor

Fig. 12.  Muon beam profile measured by the profile monitor(in X and Y) and imaging plate.

Photo 5.  New electric DC separator with widened gap.

J-PARC Annual Report 2009     Materials and Life Science Experimental Facility

19
In the pulsed muon facility, thetime width of the muon beam bunch
limits the maximum timing resolutionof the experiment.  By slicing the muon
beam in time, the timing resolution
could be improved.  We manufactured
and installed in the D1 experimental
area a muon beam slicer, which generates a pulsed electric field (E) applied

perpendicular to a stationary magnetic
field (B).  The muon passes through theslicer only when both the E and B fields
are in effect.   In 2009, we confirmedthat (1) one of the double bunch in amuon beam pulse can be selected by
the slicer, and that (2) the single bunch
may be sliced down to the width of
37 ns in FWHM. [W. Higemoto et al., J.

Phys. Conf. series 225, 012012 (2010).]The double bunch of the muon
beam will be separated and sent to
the D1 and D2 experimental areas simultaneously when a pair of kicker
and septum magnets is installed at thelast bending magnet position of the
D-line.  The designing, manufacturing
and testing of this device is underway.

Experimental Proposals and general use beam time in MUSE
For general use of the muon beam,nineteen experimental proposals were

accepted in 2009A and B period.  Outof 81 days of operation of MUSE, 49

days were dedicated for these generaluse experiments.

First scientific paper from J-PARC
Iron arsenide and pnictide superconductors, which were first reported by
Prof.  Hosono’s group at Tokyo Instituteof Technology in 2008, have now become the material with the highest Tc after the discovery of the cuprate high-Tc
materials.  The fact that iron is the majorbuilding block of this material is anotherreason why scientists are interested in;normally, iron exhibits ferromagnetism,
which is a state very different from superconductivity.
Shortly after the first muon beam
delivery at the J-PARC MUSE, this new

beamline was used in an actual experiment to characterize the magnetism of
the newly discovered iron arsenide superconductors.
One of the advantages of µSR
among local magnetic probes is its
sensitivity to the volume fraction ofmagnetism (Fig. 13).   A presence of amacroscopic phase separation between
the superconducting and magnetic
phases was observed in Ca(Fe1-xCox)AsF(x=0.0–0.15).   It was reported that themagnetic phase tends to retain the hightransition temperature (Tm > Tc), while

Fig. 13.  Volumetric fraction of paramagnetic (w1) and magnetic (w2) components in Ca(Fe1-xCox)- AsF, where theformer becomes superconducting  below Tc.

Co doping induces strong randomness.  
The volumetric fraction of the superconducting phase is nearly proportional to
the Co content x with a constant superfluid density.  These observations suggest the formation of superconducting“islands” (or domains) associated with Co
ions in the Fe2As2 layers (Fig. 14), indicating a very short coherence length.
The above result has been published and actually became the firstscientific paper produced in J-PARC.
[S. Takeshita, et al., Phys. Rev. Lett. 103,
027002 1-4 (2009).]

Fig. 14.  Picture of  “island” superconductivity obtained by µSR
measurement.  At the center of circles, the dopant Co
ion may locate.

Materials and Life Science Experimental Facility     J-PARC Annual Report 200920

Neutron Device
Commissioning of two-dimensional neutron detector for iBIX
A commissioning test on twodimensional compact scintillation
detectors using the neutron-sensitive
scintillator and wavelength-shifting
fiber technology was performed successfully at IBARAKI biological crystal  diffractometer, iBIX, (Photo 6, 7).  The

detector exhibited a spatial resolutionof 1.2 mm with a detector efficiency of
40% for 2.2-Å neutrons.
Dedicated small sized amplifier/discriminator and encoder/signal processing electronics that handle 512
channels were developed and mount-ed right behind the detector head.
This type of detector has a significant
impact not only on the data collection
efficiency but also on the data qualityof the iBIX.

ZnS scintillator/
WLS fibers/
Photomultipliers

Encoder
electronics

1000 mm

Amplifiers/
Discriminators

Photo 6. Detector modules of the two-dimensional compact scintillation detector.
The right-hand part is the neutron-detection head, which is composed of two
ZnS/10B2O3 scintillator screens and ribbons of wavelength shifting (WLS) fibers.  
Over 65% of the cross sectional area of the detection head, that is 133x133 mm2,
is neutron-sensitive.

Photo 7.  Two dimensional scintillator modules
mounted on the iBIX.

One-dimensional neutron detectors for TAKUMI
Eight one-dimensional scintillation
detectors (No.3 - No.10) with “ISIS-type”
fiber coded method were equipped on
the Engineering Materials Diffractom-

eter, TAKUMI, (BL19).  It was demonstrated that the detector and the electronics
system accomplished excellent performances of a neutron detection effi-

ciency of more than 50% at a neutron
wavelength of 1 Å and a gamma-ray
sensitivity less than 10-6 at a gammaray energy of 1.3 MeV.

Micro-pixel neutron detectors
We developed a gas-based neutron detection system, which reads
out individual lines with a micro-pixel
detector element, and conducted preliminary neutron irradiation tests.  The

micro-pixel detector element pulses
had a short duration, the full widthat half maximum of the pulse being
160 ns.  The detection system exhibits
spatial resolutions, of about 2.5 mm

FWHM, in both the anode and cathodedirections at gas pressures of 0.45 MPa
for He and 0.05 MPa for CF4.

J-PARC Annual Report 2009     Materials and Life Science Experimental Facility

21

Wideband beam focusing using a precisely fabricated elliptic supermirror
We developed a one-dimensional elliptic mirror combining a supermirror coated with ion-beam sputteringand precise elliptic surface figured with the numericallycontrolled local wet etching process under cooperation
between JAEA and Osaka University.  
A mirror substrate was prepared by figuring a surfaceof synthesized quartz glass into a plano-elliptical shape.  
The focal length is 1050 mm.  The mirror size is 90 mm(elliptic) × 40 mm (straight).   NiC/Ti supermirror (m=4)
was deposited on the elliptic quartz surface. The focused
beam width was 0.25 mm in full width at half maximum,
almost reproducing the initial beam size defined by theslit.  The focused peak intensity was 6 times the unfocusedaverage intensity.

Fig. 15.  Horizontal profiles of a focused and unfocused beam.

In-situ SEOP polarized 3He neutron spin filter
An in-situ spin-exchange opticalpumping (SEOP) polarized 3He neutron
spin filters (hereafter referred as SEOP
filter) has been developed at J-PARC topromote studies of magnetic materials
and hydrogen contained material structures with pulsed polarized neutrons.
Photo 8 shows the setup of the SEOP
filter system which is comprised of a diode laser emitter, external cavity optics

to narrow the laser wavelength band,
laser optics for laser beam shaping andpolarization and a solenoid coil with an
oven.  A diode laser system pumps thenuclear spin of 3He atoms continuously,
making it possible to keep the polarization degree of the SEOP filter during anexperiment.  3He gas is encapsulated in
an aluminosilicate glass (GE-180) cell.  
As a result of a neutron transmission

measurement, it was confirmed thatthe degree of 3He nuclear spin polarization was 73% for the spin filter cell with
17 atm-cm 3He gas.  The performance of
the SEOP filter system is at a world standard level, and we are ready to apply it
to practical neutron scattering experiments at J-PARC.

Photo 8.  Developed in-situ SEOP polarized 3He neutron spin filter system.

Particle and Nuclear Physics

Particle and Nuclear Physics     J-PARC Annual Report 200924

J-PARC’s Hadron Hall Takes Step forward to Particle
Nuclear Physics Experiments
Hadron Hall is a multipurpose experimental facility for conducting experiments in the field of the nuclear
and particle physics.   It uses intense
secondary kaon and/or pion beams
produced by a high-intensity protonbeam.  This proton beam is “slowly” extracted to create a quasi-DC beam that
extends for 2 s out of every 6-s accelerator operation cycle.  To accomplish
this, the proton beam extracted from
the Main Ring (MR) is transported to
Hadron Hall through the slow-extraction beamline in the beam switchingyard (SY).
Hadron Hall is designed to accept
a maximum beam power of 50 GeV
at 15 µA (750 kW).  The Hadron Facility group is working together with theaccelerator group for achieving earlybeam commissioning.  And currently,
the maximum beam power that has
been achieved stands at about 2 kW at
30 GeV.
The primary proton beam is focused on the production target (T1),
which can be either a 6-cm-long platinum (50% loss) or 5.4-cm-long nickel(30% loss) piece.   Currently, HadronHall’s size is 60 m across and 56 m long
along the beam direction.   Further
plans exist to extend the hall to accommodate a second production target(T2) and beamlines, which will widen
the physics scope of Hadron Hall.  Andto accommodate these plans, thebeam-dump is designed to be movable downstream.
The upper-right inset of Fig. 1
shows the layout of the beamlines at
Hadron Hall.   After the completionof construction in the beginning ofJanuary 2009, the first beam was ex-

tracted to Hadron Hall on the 27th ofthat month.  Currently, there are three
beam lines: K1.8 for separated charged
kaon beams up to about 2 GeV/c, abranch of K1.8 called K1.8BR, and KL
for neutral kaon beams.  The first kaon
beam was identified in the K1.8BR
beamline, as stated in the 2008 Annual
Report.
When beam commissioning resumed in October 2009, the physicists
working at Hadron Hall successfully
confirmed the charged and neutralkaon production in the newly constructed K1.8 and KL beamlines, respectively.
K1.8 is a charged-particle beamline that can deliver mass-separated
beams of up to 2 GeV/c with very highpurity, thanks to the double-stage
electrostatic separator (ESS) system.
The beam spectrometer, that is thelast part of the beamline, is designed
to achieve a good resolution of ∆p/p
= 3.3 × 10 −4 (FWHM), which is remarkable accomplishment.  Called the Superconducting Kaon Spectrometer(SKS), it is a high-resolution spectrometer with a large solid angle (100 msr,
where msr represents millisteradian)that was moved from KEK to J-PARC
and installed at K1.8 to study scatteredparticles.  The SKS, together with thehigh-purity kaon beam, make the K1.8
beamline the best place to investigate
hypernuclei, which are nuclei with one
or two strange-quarks in the form ofLambda or other hyperons.   As a result of that, the organization planneda large number of spectroscopy experiments with the purpose to elicit
deeper insights into the nature of thestrong force.

Beam operation began in October 2009, following the completion of
construction over the course of thatsummer.   Subsequently, despite thelimited beam time available for tuning,enhanced kaons were produced by
the ESS system as expected (see Fig. 1).  
But obviously, further beam tuning will
be attempted to achieve even higher
purity for both positive and negative
charges.
The superconducting magnet of
SKS was successfully excited up to 2.45
tesla with a current of 400 A after cooling down.   The performance evaluations of both the beamline and SKS on
the basis of Σ− production via the reaction with a liquid H2 target (π− + p → K++ Σ−) showed a good resolution of 1.7
MeV/c2.  Thus, currently, both the K1.8
beamline and SKS are ready for conducting experiments.
The KL beamline is designed totransport only the neutral particles
produced in the target by the proton
beam by sweeping charged particles
away using a dipole magnet.   TheKOTO group (J-PARC Experiment E14)
designed and constructed the newbeamline to generate a narrow neutral beam (called a "pencil” beam) byusing two stages of a metal collimator.  The group began a survey of thebeam quality in the fall of 2009.  Since
the neutral kaons cannot be measured directly with the usual methods, they detected the secondary
particles: charged pions and photons
from kaon decay, reconstructed theirprimary particle, and calculated themass.   After analyzing the data collected in November, they successfully
observed the peak at the neutral-kaon
mass (500 MeV/c2) in the reconstructedJ-PARC Annual Report 2009     Particle and Nuclear Physics

25
mass distribution, which was consistent with the distribution predicted incomputer-simulation studies, and confirmed the presence of neutral kaonsin the KL beam line.  During the J-PARC
operations until February, they continued the survey to improve the statistical precision of the measurement andto obtain the yield and momentum
spectrum of the neutral kaons in the
KL beamline.

ticles and anti-particles (CP violation)by measuring the extremely rare decay
mode of the neutral K meson by using
the high-intensity beam from J-PARC.
The aim is to obtain experimental evidence for the decay process of a longlived neutral kaon (KL) into a neutral π
meson and a pair of neutrinos, which
is predicted in the Standard Model ofparticle physics to occur with a rate ofonce in forty billion.  As the next step,
the KOTO collaboration will begin detector construction in 2010.

The purpose of the J-PARC E14
KOTO experiment is to find the originof the broken symmetry between par-neutral kaon beams with excellent
performance clearly marks the start ofthe long-awaited new Kaon Factory.
Concrete physics output could be expected with further improvements inthe beam power and quality.  The firstexperiment (E19: Penta-quark search)is planned to start its physics run in
the fall of 2010.  Furthermore, the new
K1.1BR beamline will be ready for test
experiments in the fall as well, when
the construction is expected to becompleted.

This confirmation of charged and

1200
1000
800
600
400
100
0

-10

-8

-6

-4

-2

0

2

4

6

8

10

-10

-8

-6

-4

-2

0

2

4

6

8

10

-10

-8

-6

-4

-2

0

2

4

6

8

10

1200
1000
800
600
400
100
0

5000
4000
3000
2000
1000
0

3500
3000
2500
2000
1500
1000
500
0

-8 -6 -4 -2 0

2 4

6 TOF (ns)

MKL(MeV/c2)

Fig. 1.  Schematic layout of the beamlines at Hadron Hall.  Kaon beams are clearly identified in both K1.8 and KL beamlines.  

Particle and Nuclear Physics     J-PARC Annual Report 200926

T2K experimentJapan fiscal year 2009 was a very
important and successful year for theneutrino experiment facility.   Its operation started in April 2009, with receiving the first proton beam, and it
generated a neutrino beam.  The final
installation was carried out during thesummer shut down, and it resumed
operation in November.  The first neutrino event in the on-site near detector
was recorded with the on-axis detector
INGRID on November 22, with the offaxis detector ND280 on December 19,
and eventually with the Super-Kamiokande on February 24.  We have beencollecting data for physics analysis
continuously, with the aim to discover
the first electron appearance event.
The Tokai-to-Kamioka (T2K) experiment is a second-generation
long baseline neutrino oscillation experiment with so-called off-axis configuration.   Muon neutrino beam is
produced at J-PARC with 2.5 degrees
off from the direction to the Super-Kamiokande (SK), travels 295 km acrossthe earth, and is detected by SK.  Theoff-axis beam gives us the highest possible intensity of low-energy neutrinosof interest with less high-energy tail,and enables precise measurementswith minimum background.  The primary goal of the T2K experiment is todetermine the last unknown neutrino
mixing angle θ13 by investigating oscillation where muon neutrinos turn into
electron neutrinos.  Owing to the unprecedented intensity of the neutrino
beam, the sensitivity of the T2K experiment is more than one order of magnitude higher than the present upperbound of θ13.  If θ13 is sufficiently large
to be measured in the early phase of
the experiment, the possibility of discovering CP violation in the future will
be enhanced.
In April and May, the first beamcommissioning to establish the primary proton beam line operation
was carried out with one of the threeelectromagnetic horns installed.  Thebeam-line magnets were tuned tolead the protons to the target withsingle-shot operation of the singlebunch beam with intensity of 4 × 1011
[p/bunch].   The proton beam monitors successfully measured the beam
orbit, profile, intensity and beam loss.  
The fluorescence plate installed in the
beam profile monitor just in front of
the target (OTR) confirmed that the
protons hit the center of the target,

80

160

60

140 180
120 160
140
100 120
100
80
80
60
40
60
20
080
40

40
20
0
-20
-40
-60

20

-80
-80 -60 -40 -20 0 20 40 60 80

0

60
40
20

0
-20
-40
-60
-80

0
-40 -20-80 -60

20 40

and the production of the neutrino
was confirmed by observing the coproduct muons by muon monitors(MUMON) as shown in Fig. 2.  The pion
focusing by the horn was confirmed
by observing the increase of the number of muons detected by MUMON.  
The continuous beam operation with
6-second cycle was performed, andthe neutrino facility passed the government inspection for the radiation
safety.
In November and December, withall three horns installed during thesummer shutdown, the commissioning with full equipments was conducted using 6 bunch-beam with 3.5
second cycle.  The highest single-shotbeam intensity during this period was
1 × 1013 [p/bunch], which corresponds
to 80 kW beam.  Fine beam tuning toobtain optimum beam envelope, andthus to reduce beam losses, was carried out together with response studyof proton beam monitors.  Loss monitors were calibrated using 10-5 level
beam loss caused by Ti foil of profile
monitors.  All monitors satisfy requirement from 1 kW beam to 50 kW beam:
intensity can be measured with 2%
precision, position better than 0.5 mm,

60 80

Fig. 2.  Muon profile measured by MUMON detector.

J-PARC Annual Report 2009     Particle and Nuclear Physics

27
size better than 0.5 mm, loss down
to a few hundred mW level.  The OTR
monitor measures the beam positionand size at the target front-face reliably.  The discrepancy of the measured
beam orbit from the design orbit wasless than 2 mm.  The neutrino beam
direction towards SK was tuned within
1~mrad accuracy by monitoring themuon profile center.  The continuous
operation with 20 kW beam was performed and it was confirmed that thebeam loss was small enough.  The firstneutrino event in the on-site near detector was recorded with the on-axis

detector on November 22 as shown in
Fig. 3, and with the off-axis detector on
December 19.
In January 2010, after installation of a collimator and improvementof underground air-tightness to beprepared for higher-intensity beam,continuous operation to accumulate
physics data started.   By the end of
March 2010, the beam power for continuous operation reached 30 kW, andthe number of delivered protons became 3.9×1018.
The first neutrino interaction at SKon the beam timing was observed on

on February 24, 2010.  The event display of SK detector is shown in Fig. 4.  
This is one of the most important milestones for the T2K experiment.  It also
indicated that the timing synchronization between J-PARC and SK worked as
expected.  Beam intensity has been increasing and we have been accumulating a number of protons on the target
as shown in Fig. 5.  T2K will accumulate
more neutrino events at SK to search
for a new type of neutrino oscillation
with the world's best sensitivity.

Fig. 3.  First neutrino event measured by INGRID on-axis detector.

Particle and Nuclear Physics     J-PARC Annual Report 200928

4 10184 1013

3.5 1018

3.5 1013

3 10183 1013

2.5 1018

2.5 1013

2 10182 1013

1.5 1018

1.5 1013

1 1018

1 10135 10175 1012

0
1/17

1/31

2/14

2/28

Date

3/14

Proton# per pulse

Delivered Proton# @ CT05

Fig. 4.  First neutrino event measured by Super-Kamiokande.

0
3/28

Fig.4 History plot of number of protons delivered to the target.
Fig. 5. The
History
plotlineof theof protons
the target.  Theis the that
total number
protons, analysis.
readis number
total numberof delivered
protons,towhile
the blue redlinelineshows
used forofphysics
while the blue line shows the number used for physics analysis.

Superconducting magnet for the J-PARC neutrino beam line

Cryogenics

Cryogenics     J-PARC Annual Report 2009

30

J-PARC Neutrino Beam Line Superconducting Magnet
System
A superconducting magnet system for the J-PARC neutrino beam line
was developed with the contributions
and in cooperation of the Cryogenics
Science Center of Applied ResearchLaboratory (ARL) and the cryogenics
group at Institute of Particle and Nuclear Physics Studies (IPNS) in KEK.  Thesystem consists of 14 doublet cryostats; each contains 2 combined function magnets (SCFM).  The SCFM uses
two single layer left/right asymmetriccoils that produce a dipole field of 2.6 T
and quadrupole of 19 T/m.  The systeminstallation and commissioning took
place from February 2008 to March
2009.  The beam operation started in
April 2009 and the first neutrino beam
was generated on 23rd April.  Beamline studies were performed to verify
the ratio of the dipole field to thequadrupole field, as well as the SCFM
alignment in the beam optics.  A beam

induced quench test was also performed to verify the operational safety.  
In both tests, the system showed sufficient performance and safety for thecontinuation of the beam operation.
The initial beam commissioning
continued until June 2009 followed bya scheduled maintenance shutdown.
The system resumed operation in theend of September 2009, and sincethen, the magnets have been kept
cold, planned, until the next summer
shutdown in 2010.  The cryogenic system was stopped periodically for short
shutdown (about a week or less) forscheduled maintenance.  During those
short shutdowns the magnets warmed
up to about 100 K, so that re-cooling
was rapid (for 3 to 4 days), and then asmall enough amount of helium gas
was kept in the tunnel to ensure safety
during the maintenance work.  During

Compressor Capacity
Compressor Current

Compensation Heater Power

1.5

100

1000

180

1.4

80

800

140

120

100

1.3

60

1.2

40

1.1

20

1.0
21:00

0
21:30

22:00

22:30

23:00

23:30

600

400

200

0

00:00

Time

Fig. 1.  Trend curves of various parameters during the transition from the normal mode to power saving mode.

Heater Power (W)160

Compressor Outlet Pressure (MPa)200

Compressor Capacity (%) or Current (A)Cold Box Flow (g/s)

Cold Box Flow Rate
Compressor Outlet Pressure

the continuous operation period, significant efforts were made to minimize
the power consumption of the helium
refrigerator, which was major part of
the remaining power consumption
after achieving substantial power savings by using the superconducting
magnet system.   Figure 1 shows thetrends of the various parameters of thehelium refrigerator during the transition from the normal mode to powersaving mode.  The power saving wasachieved by reducing and optimizing
both the helium-gas flow capacity andthe outlet pressure of a main compressor of the refrigerator.  After multiple
tuning efforts, the automatic transition operation was accomplished, andthe power consumption was brought
down to 420 kW from 600 kW, or by
one third, corresponding to a reduction of the carbon dioxide emissions
by about 70 ton per month.

J-PARC Annual Report 2009     Cryogenics

31

Development of Superconducting Solenoids for Muon
Beam Lines at MLF
In collaboration with the Muon Science Division of Institute of Materials
Structure Science in KEK, we developed
a superconducting curved solenoid for
the Super-Omega muon beam line,
one of four secondary muon beamlines at the Materials and Life Science
Experimental Facility (MLF) in J-PARC.  
The beam line starts to extract thebeam 45° into backward angles fromthe production target to transport thesurface μ+ and cloud μ− to the MLF experimental hall 2.  Once the beam line

is completed, it will produce the highest intensity pulsed muon beam everachieved in the world, with 4 ×108 μ+/s
and 107 μ−/s, and it will be used primarily for producing an ultra-slow muon
beam.  The beam line contains a superconducting solenoid magnet system
including 45° curved solenoid sections
to transport the high-quality muon
beam.   Since Japan fiscal year 2008,
the R&D for the curved solenoid has
been carried out and various model
coils have been fabricated as shown in

Photo 1.  In Japan fiscal year 2009, we
conducted intense studies for quench
protection and safety of the superconducting solenoid coils. During the studies, a new protection design so-called“passive self-quench back scheme” wasconfirmed to work very well.  Based on
this experience, the same design is being applied to a newly renovated muon
beam line (Muon Science International
Center: MUSIC) at the Research Center
for Nuclear Physics (RCNP) in Osaka
University.

Photo 1.  Cryogenics setup for testing super omega curved solenoid model coil.

Cryogenics     J-PARC Annual Report 2009

32

Superconducting Magnet R&D for COMET Experiment
A new experiment, COherent
Muon to Electron Transition (COMET)
has been proposed to search for coherent neutrino-less conversion of muons
to electrons using the high intensity
proton beam from J-PARC Main Ring.
The Cryogenics section has been in-volved in the COMET experiment tocontribute to the development of thesuperconducting magnet system.   InJapan fiscal year 2009, a conceptual
design of the magnet system was established, as shown in Fig. 2, and several R&D works were carried out.  An

important milestone was the development of the prototype aluminumstabilized NbTi superconductor for theso-called “pion capture solenoid” withan inner diameter of 1.6 m and a central field of 5 T.

COMETSpectrometer
Solenoid

Detector
Solenoidradiation shield

φ1300

Muon Transport
Solenoid

protonpion production target

beam

Pion Capture Solenoid
Fig. 2.  Schematic view of a superconducting magnet system for the COMET experiment.

High Precision Superconducting Solenoid R&D for Muon g-2
Experiment
The anomalous magnetic momentof the muon is directly sensitive to electromagnetic, strong, and weak forces,
and the precise measurement of g-2
might lead the new physics beyond
the standard model.  The experimentat J-PARC to measure the g-2 value
with a very high sensitivity level of 0.1
ppm has been proposed by the groupin the Institute of Particle and Nuclear
Physics Studies, IPNS.   A very highprecision superconducting solenoid
magnet is expected to play an important role in the storage of muon beams

in this experiment, the development  
started in cooperation between IPNS
and the Cryogenics section in fiscal
year 2009.  The required specification isvery challenging, it consists of a central
magnetic field of 3 T with a field variation below 0.1 ppm within a cylindricalstorage region of 33.3 ± 5 cm in radius,±10 cm in height.  To achieve such highuniformity, the precision field monitoring system is also required to checkthe field quality with an accuracy of 0.1
ppm, the prototype of the system wasdeveloped in fiscal year 2009 as shownin Photo 2.  It will be tested with a 3 T
MRI magnet at the National Instituteof Radiological Science in the next fiscal year.  In addition, a seismic groundvibration at J-PARC MLF has been measured for later mechanical analysis, because the mechanical vibration of themagnet due to the ground vibration
might disturb the field uniformity.  Thisvibration measurement will be carriedout throughout the year to observe
the year-round change.

J-PARC Annual Report 2009     Cryogenics

33

Fig. 4.PhotoDeveloped
movingstage for the
precision
field monitoring
system field monitoring system.
2. horizontal
Developed
horizontal
movingstage
for the precision

Superconducting Kaon Spectrometer (SKS)The Superconducting Kaon Spectrometer (SKS) was installed into theK1.8 experimental area at the J-PARC
Hadron Hall.  The SKS system and its
schematic flow are shown in Fig. 3.  

After the system was built, the superconducting magnet was cooled-down
and the liquid helium volume in themagnet has been kept at even levelby using a set of GM and GM/JT cryo-coolers.  The magnet has successfully
passed system commissioning.  Thenthe magnet has been used for physicalexperiments since November 2009.

Fig. 5. The Superconducting Kaon Spectrometer (SKS) magnet with three GM-JT cryocoolers to maintain the LHe level

Remodeledcryogenic
systemof theSKS
and three
GM cryocoolers
for the shieldcooling.
GM GM

GM-JTsGM
Conventional coilvessel5

He (4.3K)

Magnet(4.3 K)

New helium tankFig. 3. The Superconducting Kaon Spectrometer (SKS) magnet with three GM-JT cryocoolers to maintain the LHe level andthree GM cryocoolers for the shield cooling.

Cryogenics     J-PARC Annual Report 200934

Cryogen Supply and Technical Support at Tokai Campus
operated by the Accelerator division at
JAEA for superconducting RF development.  The evaporated helium gas isrecovered from remote experimental
areas to a recovery station provided by
KEK to the west of the MLF building.  

The cryogenics section has also
started to supply liquid helium forphysics experiments and various development activities in J-PARC.   Thehelium liquefaction facility, with a capacity of 100 l/h, is already owned and

The service started in September 2009,and more than 15,000 liter of liquid
helium was supplied as shown in Fig.
4 and most of the evaporated gas was
been mostly recovered.

㪐㪇㪇㪇㪣㫀㫈㫌㫀㪻㩷㪟㪼㫃㫀㫌㫄㩷㪪㫌㫇㫇㫃㫐㩷㩿㪣㪀

㪏㪇㪇㪇

䌍䌌䌆

㪎㪇㪇㪇

㪟㪸㪻㫉㫆㫅㩷㩿㪪㪢㪪㪀

㪍㪇㪇㪇
㪌㪇㪇㪇
㪋㪇㪇㪇
㪊㪇㪇㪇
㪉㪇㪇㪇
㪈㪇㪇㪇
㪇
㪏

㪐

㪈㪇

㪈㪈

㪈㪉

㪉㪇㪇㪐

㪈

㪉
㪉㪇㪈㪇

㪤㫆㫅㫋㪿
Fig. 4.  Supply of liquid helium for fiscal year 2009.

㪊Information System

Information System     J-PARC Annual Report 200936

Overview
The J-PARC Information System isa system of computers and networks
used to conduct researches in J-PARC.  
The Information System Section designs, manages and operates thesystem.  The activities of the section
consist of running the Infrastructure

Network system, Authentication System and Data Base System.  The aim foreach system is to be both secure andeasy-to-use ICT (Information Communication Technology) infrastructure for
J-PARC users.  In 2009, J-PARC started toutilize KEK’s central computing system

for neutrinos, nuclear physics and MLF
experiments data analysis and data archive through a SINET3 (http://www.
sinet.ad.jp/) (2 Gbps) and IBBN (100Mbps) backup link which connected
Tsukuba and Tokai area.

J-PARC network (JLAN) growth
JLAN is an information and communication infrastructure for J-PARC
public users and staff.  As shown below, the number of hosts connected
to JLAN increased 130% in 2009 andthe edge switches of JLAN exceeded
80 devices.  It also transparently covers

2500

two sites in J-PARC, the Tokai site andTsukuba site which are about 60 km
apart.  The SINET3 information network(http://www.sinet.ad.jp/) had linked
these sites with 1 Gbps bandwidthsince October 2008.  Thanks to the support of the Japan National Institute of

MLF users
hadron,ν users
KEK staff
JAEA staff

2000

Informatics (NII), which managed the
SINET network, the link bandwidth was
doubled to 2 Gbps just before the 2009
autumn RUN and it will be upgraded
up to 10 Gbps in Japan fiscal year 2011.  
Figure 3 shows a track record of thedata transfer from Tokai to Tsukuba.

180
160

Edge Switches

140

WLAN Access Points

120

1500

100
80

1000

60
500

40
20
3

2009

4

5

6

7

8

9

10 11 120

1

2002 2003 2004 2005 2006 2007 2008 20092010

Fig. 1.  Number of hosts on JLAN.

Fig. 2.  Number of JLAN Edge Switches and Wireless Access Points.

600
500

Average
5min. Max.

400

Mbit/s

0

300
200
100
0
10
2009

11

12

1

2

3

2010

Fig. 3.  Data transfer rate from Tokai to Tsukuba campus.

4

J-PARC Annual Report 2009     Information System

37

Starting to utilize KEK’s Central computer system
J-PARC does not have its own computing facility, but it is authorized toshare with KEK computing resources
consisting of 1600 SPECint06 computing power, 150 TBytes RAID disks and2 PBytes tape libraries in KEK’s Centralcomputer system at the Tsukuba site.  
Figure 4 depicts the system structure.  
In the Neutrino and Hadron experi-ments, data taken in the J-PARC experimental hall will be temporarily saved at
the Tokai site and promptly transferred
to, stored and analyzed in the Tsukuba
system.  The storage of the system will
be utilized as a data archive for MLF experiments.  Figures 5 to 8 shows the utilization records of the system in 2009.
The Hadron users who used the systemconstantly were users who continue
their experiment in series from the former KEK 12 GeV Proton synchrotron to
J-PARC.  The Neutrino users just started
to use the system after the autumn run
and gradually began to store data.  TheMLF users still seem to be satisfied withthe local computing resources at theTokai area.  

Central Computing System (KEK CC)

Since Mar. 2009

Computing Server

Total
System84 IBM System x3550
Intel Xeon‐QX 5460 x2
MEM:16GB/node

GPFS/API/VFS
API/VFS

GPFS
API/VFSGPFS

GRID Systems

GPFS

LCG System
Naregi System
iRODS System

Tokai campus
J‐PARC

Storages
HPSS

Disk Storage

IBM TS3500（3PB）
IBM 3592 Tape Drive
IBM DS4800（10TB）IBM DS4800（205TB）
LTO4 Tape Drive

API/FTP
CIFS/NFSv4

CIFS/NFSv4

Work Server

Parallel Server

4 x3550
Xeon‐QX 5460 x2
MEM:16GB/nodeSSH

4 x3550
Xeon‐QX 5460 x2
MEM:32GB/node

SSH

FW
FW

KEK intra

KEK‐FW

SINET3User’s hostFig. 4.  KEK’s Central Computer System. (this figure includes resources for users other than J-PARC)

(%)

1000

100

㪥㪼㫌㫋㫉㫀㫅㫆

90

㪤㪣㪝

80

800

㪟㪸㪻㫉㫆㫅

70

700

㪦㫋㪿㪼㫉㩷㪢㪜㪢㩷㫌㫊㪼

60

900

600

50

500

40

400

30

300

20

200

10

100

0

3
4
2009

5

6

7

8

9

10

11

12

1
2
2010

Fig. 5.  CPU utilization of KEK’s central computer by J-PARC users.

0

Neutrino
MLF
HadronOther KEK use

3
4
2009

5

6

7

8

9

10

11

12

Fig. 6.  Number of Logins by J-PARC users.

1
2010

Information System     J-PARC Annual Report 200938

HadronNeutrino
MLF

100

TBytes

10
1
0.1
0.01
0.001

2

3

4

5

6

7

8

9

10

11

12

2009

1

2

2010

Fig. 7.  Disk utilization by J-PARC users.

Hadoron koto (E14)

Neutrino

Hadron Other

MLF

100TB

Bytes

10TB
1TB

1GB
2

3

4

5

6

7

8

9

10

2009

11

12

1

2010

Fig. 8.  Tape utilization by J-PARC users.

2

Preparation for a experiment at JLBL-4(JAEA Lead Bismuth Loop-4)

Observation of a sample using an scanning electron microscopy

Transmutation Studies

Transmutation Studies    J-PARC Annual Report 200940

International ADS Workshop
A workshop titled “Acceleratordriven Transmutation System for Young
Scientists and Engineers from Europe
and Asia”, covering the AcceleratorDriven System (ADS), was held from
December 1st through 4th at the Tokaisite of JAEA in cooperation with J-PARC,
the Nuclear Science and Engineering
Directorate, and the Nuclear Technology and Education Center (NuTEC).  
The workshop was organized as a partof the research cooperation between

JAEA and the European ADS projectcalled EUROTRANS, and also as a partof a training course of the European
Nuclear Education Network (ENEN)
with which NuTEC is in collaboration.
Moreover, this event was organized
as the 7th workshop of the Asia ADS
Network as well.  It was open to young
scientists from Asian and European
countries, 55 participants attended,
including 32 foreign attendees from15 countries.  The four lectures given

during the workshop covered research
fields related to ADS and research activities for ADS in Japan, China, Korea,
and Europe.  Moreover, the young participants presented 20 papers, and actively discussed important issues about
ADS and the international collaboration actively discussed.  In a technicaltour, the participants visited Materials
and Life Science Experimental Facilityand Hadron Hall in J-PARC.

Activities
Corrosion test under flowing Pb-Bi
The JAEA Lead Bismuth Loop -1(JLBL-1) has been operating for about
10 years with the purpose to investigate the corrosion behaviour of materials in flowing lead-bismuth (Pb-Bi).  
The experimental results are to be
used to develope a beam window andstructural materials for ADS.  Recently,
a corrosion test of solution annealed(SA)-JPCA and 20% cold worked (CW)JPCA pipe specimen was conducted
for 1,000 hours using JLBL-1, TIG welds
were applied for joining SA-JPCA and

20%CW-JPCA, and its compatibility inflowing Pb-Bi has also been investigated.  The results showed that Pb-Bi
penetrated superficially into the matrixof SA-JPCA through a thin ferrite layer
formed due to nickel and chromium
dissolution.  As for 20%CW-JPCA, a dissolution attack occurred only partially,and localized superficial pitting corrosion was observed.   We found outthat the difference in the corrosion behaviour occurred due to the structuretransformation of the austenitic causedby the cold working.   By using MFM(Magnetic Force Microscopy), magnetization of the 20%CW-JPCA was revealed as shown in Fig. 1.  It was shownthat a transformation from austenitic
structure to martensitic structure occurred, and it affected the corrosion
resistance of the JPCA steel in liquid
Pb-Bi.  As a next step, corrosion test of
the same type materials and high-Cr
ODS (oxide dispersion strengthened)
has been performed for 3,000 hours.

J-PARC Annual Report 2009     Transmutation Studies

41

resistance of the JPCA steel in liquid Pb-Bi. As the next step, corrosion test of the same type materials
and high-Cr ODS (oxide dispersion strengthened) has been performed for 3,000 hours.

magnetic
patternFig. 1. MFM analysis of 20%CW-JPCA
Fig. 1.  MFM analysis of 20%CW-JPCA

Post Irradiation Test
To obtain the irradiation data on structural materials of spalltion target, the STIP (SINQ target irradiation
SINQ; Swiss spallation neutron source) has been progressing. Post irradiation examination
Postprogram,
Irradiation
Test(PIE) of specimens was carried out at WASTEF in Tokai Research and Development Center, JAEA.
To obtain the irradiation data on was carried out at Waste Safety Testing up to 19.5 dpa is almost the same as
Results of the bend-fatigue tests on austenitic steel JPCA indicated that the fatigue life of specimens
structural materials of spalltion target, Facility (WASTEF) in the Tokai Research that of unirradiated specimens.  Doseirradiatedto 19.5
dpa is proalmost andthe sameas that ofunirradiatedspecimens.
Doseofdependence
ofwas notthe STIP(SINQ uptargetirradiation
Development
Center,
JAEA.  Thedependence
the fatigue life
fatiguelifespallation
was also neutron
not observed.
gram,the
SINQ;
Swiss
results of the bend-fatigue tests on observed either.
source)has been in progress.  Post irra- austenitic steel JPCA indicated that
MEGAPIE
diationexamination(PIE)of specimens lead-bismuth
the fatigue lifetarget,of specimens
irradiatedThe
world’s first
megawatt-class
MEGAPIE(MEGAwatt Pilot Experiment), wassuccessfully operated and dismantled in ZWILAG hot-lab. Some meetings on MEGAPIE were held at
PSI (Paul Scherrer Institute, Swizerland) in November 2009. In the meetings, the dismantling process
MEGAPIE
of MEGAPIE target and related hot-lab working were reported. It was shown that the schedule ofThe
world’s
firstandmegawatt-classsamplecuttingtransport will beMEGAPIE
delayed.were held at PSI (Paul Scher- It became clear that the schedule oflead-bismuth target, MEGAPIE (MEGA- rer Institute, Swizerland) in November the sample cutting and transport willof Flow
Techniques
watt Development
Pilot Experiment),
was Measurement
success- 2009.  In
the meetings, the dismantling be delayed.
This
study*
proposesanewtechniquethatenablestheandmeasurementof the velocity vector in
fully operated and dismantled at the process of
MEGAPIE
targetthe remulti-dimensions
onmeetings
a line inon
the flowbased
on ultrasonicvelocity profiling (UVP) method. It was
ZWILAG
hot-lab.  Several
latedfieldhot-labactivities
were reported.
named Vector-UVP. This system was constructed and successfully applied to an actual liquid metal
flow for three-dimensional velocity vector measurements. The schematic illustration and measurement

Developmentof Flow Measurement Techniques
configuration were shown in Figure 2. The working fluid was LBE which was kept at 150 ℃ constant.

This study* proposes a new tech- illustration and measurement configu- stantaneous flow, which had a vortex
3 shows
example of theration
experimental
The spatial-resolution
wasthree-dimensional
0.88 mm, and theniqueFigurethat enables
theanmeasurement
are shownresult.
in Fig. 2.  Theworking flow withstructureof thetime-resolution
velocity vector wasin multi-dimenwasaveraged
LBE whichresult
was kept
150orderly°C caused
50 msec. Thefluidtime
hadatanflow likea Poiseuilleflow.
by thevelocity fluctuation.  In
sionsHowever,on a line in
the flow field
based
shows
an exampleflowthe
future,systemflow
will withaccomplish
Vector-UVP
systemwas constant.  Figure
able to measure 3theinstantaneous
which
hadthisa vortex
on ultrasonicvelocity profiling
(UVP)
of by
thetheexperimental
result.   TheInspameasurement
the various
three-dimensional
structurecausedvelocity fluctuation.
future,thethissystem willofrealize
the liquid
method.  
It
was
named
Vector-UVP.  
tial-resolution
was
0.88
mm,
and
the
metal
flows
in
actualtemperature
measurement of the various liquid metal flows in an actual temperature condition by using the conThis system
was createdultrasonicand successtime-resolution was 50 msec.  The time- ditions by using the high-temperature
high-temperaturetransducer.
fully applied
toanactualliquidmetal
resulthad anresearchorderly flow
ultrasonic transducer.
*This study was supported by averaged
innovative
nuclearandlikedevelopment
program by Japan
flow for three-dimensional velocity a Poiseuille flow.  However, Vector-UVP
vector measurements.  The schematic system was able to measure the in*This study was supported by an innovative nuclear research and development program created by the Japan Science and Technology agency (JST).

Transmutation Studies    J-PARC Annual Report 200942

Science and Technology agency (JST).

Science and Technology agency (JST).

Fig.2 schematic illustration and configuration for LBE flow measurement
Fig. 2.  schematic illustration and configuration for LBE flow measurement

Fig.2 schematic illustration and configuration for LBE flow measurement

Fig.3 Averaged and instantaneous three-dimensional velocity vector profile in LBE loop measured by
Vector-UVP system

Fig.3 Averaged and instantaneous three-dimensional velocity vector profile in LBE loop measured by
Fig. 3.  Averaged
and instantaneous three-dimensional velocity vector profile in LBE loop measured by Vector-UVP system
Vector-UVP
systemSafetySafety     J-PARC Annual Report 2009

44
J-PARC is a proton accelerator
complex with various experimental
facilities.  It is managed under the Law
Concerning Prevention of Radiation
Hazards Due to Radio-Isotopes, etc. in
the Japanese legal system.  A license
for its use must be issued by the Ministry of Education, Culture, Sports,
Science and Technology (MEXT), andthe related safety inspection must be
conducted by the Nuclear Safety Technology Center (NUSTEC), before theaccelerator and the experimental facilities begin their operations.  The application process for the license started in2005 for the first phase of constructionof the accelerator LINAC.  By the end of
fiscal year 2008, we have already submitted five applications to MEXT andreceived the permission to deliver the
3 GeV/250 kW proton beams to Materials and Life Sciences Experimental
Facility (MLF), and 30 GeV/1.2 kW proton beams to the Hadron and Neutrino
facilities.
In fiscal year 2009, two applications, shown in the table, were submitted to MEXT.  In the first application, weapplied for the usage of two secondary
beam lines (K1.8 and KL) in the Hadronexperimental facility and the increaseof proton beam intensity of 100 kW for
50 GeV proton synchrotron ring (MR)and Neutrino experimental facility,
and of 5 kW for the Hadron experimental facility.  We submitted the application to MEXT on June 24, 2009, andall items that we applied for were approved on September 25, 2009.  In thesecond application, which we submitted on January 20, 2010, we requested
the usage of a secondary beam line
(K1.1BR) in the Hadron experimental
facility, and the item was approved on
April 1, 2010.
The on-site inspections for the applications of fiscal year 2008 and thefirst application of fiscal year 2009 weresuccessfully conducted by NUSTEC on
May 29, 2009 and December 16, 2009,
respectively.  Therefore, the secondary
beam lines (K1.8 and KL) in the Hadronexperimental facility were officiallyopened for users to conduct beam experiments, and we were able to operate proton beams with an intensity of 5

and 100 kW for the Hadron and Neutrino experimental facilities, respectively.  
Photos 1 and 2 show the safety inspection conducted by NUSTEC.
The building for radiation measurements (2-story above the ground,
700 m2) was newly constructed (Photo3).   The application for setting up aradiation controlled area in the building was submitted to MEXT, and we
received the permission on March 25,
2009.  The area will be set up in May,
2010, and the radioactivity in environment will be measured.
In fiscal year 2009, 2154 individuals were registered as radiation workers in J-PARC (about 16% increase
compared to fiscal year 2008).   Theradiation exposure of the workers has
been monitored individually with glass
dosimeters and solid state nuclear
track detectors.  According to the records, the individual exposure to radiation for almost all was undetectable,
and 0.1 mSv/y was recorded for only 2
workers (staffs).

Table 1. Application items for the license in fiscal year 2009

Accelerator/Facility

Item

Linac

-

Application (1)submitted : Jun. 24, 2009
approved : Sep. 25, 2009

Application (2)submitted : Jan. 20, 2010
approved : Apr. 1, 2010

-

-

18

3 GeV RCS

Max. accelerating particles

From 1.9x10 /h (@250 kW)
to 2.0x1018/h (@260 kW)-

MR

Max. accelerating particles

From 9.0x1014/h (@1.2 kW)
to 7.5x1016/h (@100 kW)

-

MLF

-

-

-

Max. accelerating particles

From 9.0x10 /h (@1.2 kW)
to 3.75x1015/h (@5 kW)-

Experimental beam lines

Add K1.8 and KL beam lines

Add K1.1BR beam line

Max. accelerating particles

From 9.0x1014/h (@1.2 kW)
to 7.5x1016/h (@100 kW)-

HadronNeutrino14

J-PARC Annual Report 2009     Safety

45

Photo 1.  Safety inspection by NUSTEC (1)Photo 2.  Safety inspection by NUSTEC (2)Photo 3.  Building for radiation measurements

Users OfficeUsers Office     J-PARC Annual Report 200948

Overview
The J-PARC Center Users Office(UO) was set up in 2007 to act as a direct interface between J-PARC and its
users, which was thought to be one of
the effective ways of making J-PARC
user-friendly.
In general, those who would liketo request beam time submit their
proposals.   Once the proposals are

accepted, they create procedures forwork at J-PARC.  After the beam time’s
completion, they submit experimental
reports.  J-PARC has introduced a webbased system, which enables themto execute the above processes online.  The system consists of proposal
submission system, proposal review
system, user support system and ex-

perimental report submission system.  
The proposal submission system andthe user support system started in2008.  And in 2009 the proposal review
system started and the experimental
report submission system was developed.  The experimental report submission system is scheduled to start its
operations in 2010.

The UO had the following tasks in 2009:
1) Procedures for Working at J-PARC
User registration
Issue of J-PARC User ID Card
Issue of Cafeteria Card
Issue of Car Driving Permit
Procedures for working at radiation controlled area
Procedures for Network (JLAN) use in Tokai area
Visa application support

2) Daily Life Support
Accommodation booking
Car renting support
Bike lending
Offering daily life information

3) User Programs AcceptanceAccepting user proposals through the proposal submission system and forwarding them to the Proposal Review
Committee

4) Advice Request AcceptanceAccepting advice request concerning proposals or technical matters and forwarding them to persons concerned

Status of accommodations
It has been crucial to provide goodaccommodations for the users.  Since
its inception the UO, cooperating withother departments concerned, hasbeen making efforts to secure goodaccommodations.  The accommoda-

tions available in 2009 are listed withphotographs in this section.
Moreover the construction of a
new user dormitory with 49 rooms
at Ibaraki Quantum Beam ResearchCenter was started.  It is scheduled toopen in January 2011.  The availabilityof Ohta Danchi Bldg. B and D with 12
apartments (3DK) for more than one
month stay was considered as well.  
They are scheduled to be available in
October, 2010.

J-PARC Annual Report 2009     Users Office

49

Suig
un L
ine

Locations of accomodations available in 2009

Tokai Village
Officepy
ban Ex349
Naka ICJo

Tokai

Kamisugaya

Kasamatsu
Sports Park

Naka City
Office

ban
Li

245

J-PARC(3) Masago
International
Lodging

JR J
o

(4)
MinouchJyutakune

Nakasugaya(1)
Akogigaura
Club

J-PARC Center
Users Office

Shimosugaya

6

Sawa

(2)
Tokai
Bunshitsu
Hitachitsuda(1)  Akogigaura Clubfor less than one month staySingle (western style): 15 rooms
Twin (western style): 2 rooms
Single (Japanese style): 8 rooms(2)  Tokai Bunshitsu
for less than one month staySingle (western style): 9 rooms
Twin (western style): 2 rooms(4) Minouchi Jyutaku
for more than one month stay
15 houses (3LDK)(5) Ohta Danchi Bldg.C
for more than one month stay
12 apartments (3DK)(5) Ohta Danchi
Bldg. C

Hitachi Seaside Park(3) Masago International Lodging
for more than one month staySingle (western style): 30 rooms
Twin (western style): 3 rooms

Users Office     J-PARC Annual Report 2009

50

User statistics
As a whole the number of the users has been increasing, although it is

not an accurately constant increase.  
The followings are charts showing thenumber of users who stayed at J-PARC
in 2009.

(1) Users in 2009 (according to organizations, person-days)
Japanese Universities

2,500

Public Organizations

2,000Japanese Universities

Private Enterprises

Public Organizations
Private Enterprises

1,500

Foreign Organizations

Foreign Organizations

8,967

1,000
500
0

16,295

4
2009

5

6

7

8

9

10

11

12

1
2010

2

3

1,989
304

(2) Users in 2009 (according to facilities, person-days)
MLF
HadronNeutrino
Accelerator

2,500

1,625
3,549

MLF

2,000

Hadron1,500

Neutrino
Accelerator

1,000

4,536

500
0

17,8454 5
2009(3) Users in 2009 (Japanese people · Foreigners people, person-days)
4,000

Foreign ers People

3,500Japanese People

3,000
2,500
2,000
1,500
1,000
500
0

4
2009

5

6

7

8

9

10

11

12

1
2010

2

3

6

7

8

9

10 11 12

1 2
2010

3

User Program

User Program     J-PARC Annual Report 200952

1. Proposal Reviewing System for the MLF User Program
J‐PARC Steering Committee
Users
ProposalAcceptance andResult Notification

Proposal
Submitting

J‐PARC Center

Proposals to
Ibaraki‐Prefecture
Beam Lines arereviewed by MLF‐PAC.

J‐PARC
Director

Users Office

MLF Advisory BoardKEK Inter‐University
Research Use Programs arereviewed by MLF‐PAC.
KEK IMSS director shallapprove the results.

Neutron Science
Proposal Review Committee

Muon Science
Proposal Review Committee

Sub‐Committees

Sub‐Committees

Referees

Referees

JAEA entrusts review
of its own program
to MLF‐PAC.

Call for proposals for the second half of 2009 (2009B): June 1 – June 19, 2009
The review results were announced in October, 2009.
Call for proposals for the first half of 2010 (2010A): December 1, 2009 – February 7, 2010
The review results were announced in April, 2010.

Not Accepted
Instrument Group / Project Use
General Use (accepted)

2. Summary of Applications and Results (MLF)(1)  2009B
50

14

45
40

10

Beam Time (days)

Number of Proposals

12

8
6
4

35
30
25
20
15
10

2

5

0

0
BL-01

BL-03

BL-04

BL-08

BL-10

BL-14

BL-16

BL-19

BL-20

BL-01

D1

BL-03

BL-04

BL-08

Instruments

BL-10

BL-14

BL-16

BL-19

BL-20

D1

BL-16

BL-19

BL-20

D1

Instruments(2)  2010A
100

25

90
80
Beam Time (days)

Number of Proposals

20
15
10
5

70
60
50
40
30
20
10

0
BL-01

BL-03

BL-04

BL-08

BL-10

BL-14

Instruments

BL-16

BL-19

BL-20 D1࡮D2

0
BL-01

BL-03

BL-04

BL-08

BL-10

BL-14

Instruments

J-PARC Annual Report 2009     User Program53

3. Access Mode for MLF Use(1) General use
The general use provides both local and international users with opportunities to conduct experiments.  A variety ofexperiments are accepted both for academic researches and industrial applications.
(2) Project use
The project use provides JAEA and KEK with opportunities to conduct their main-task-oriented programs such as inclusive scientific research projects, research programs proposed to fulfill the plans for the midterm goals of JAEA, joint research
programs and contract research programs with other institutes or organizations.  The principal researchers in the project
may request beamtime longer than one year.
(3) Instrument group use
The instrument group use provides the instrument scientists responsible for the beam-line instruments with opportunities to maintain and/or improve the performance of their instruments and conduct leading-edge research and development
which would ensure maximum performance of the instruments so that MLF can always provide the users with superior
experimental conditions.

4. Process for Approving Experimental Programs in Particle and Nuclear
Physics

Council for IPNS

Institute of Particle
and Nuclear Studies(IPNS) at KEK

elect
the members

Program Advisory Committee 㽴
(PAC)

IPNS
Director

㽲 Submission
㽳 Evaluation Request
㽴 Evaluation Request
㽵 Evaluation Result
㽶 Evaluation Report
㽷 Reply to Users

㽳
J‐PARC Center㽶㽷㽵The eighth PAC meeting was held on July 17 – 19, 2009.
The ninth PAC meeting was held on January 15 – 17, 2010.

㽲

J‐PARC User

User Program     J-PARC Annual Report 200954

5. Approval Summary of the Particle and Nuclear Physics Experiments
after the 9-th PAC Meeting (January 17, 2010)(Co-)
Spokespersons

Affiliation

Approval status Slow line priority
Beamline(PAC recomDay1
Day1?
mendation)
Priority

Title of the experiment

E03

K. Tanida

Kyoto U

Measurement of X rays from X– Atom

Stage 2

K1.8

P04

J.C.Peng;
S. Sawada

U of Illinois at Urba- Measurement of High-Mass Dimuon Production at the 50na-Champaign; KEK GeV Proton Synchrotron

DeferredPrimary

E05

T. Nagae

Kyoto USpectroscopic Study of X-Hypernucleus, 12XBe, via the 12C(K–,K+) Reaction

Stage 2

E06

J. Imazato

KEK

Measurement of T-violating Transverse Muon Polarization in
K+ -> p0 m+ n Decays

Stage 1K1.1BR

E07

K. Imai,
K. Nakazawa,
H. Tamura

Kyoto U, Gifu U,
Tohoku U

Systematic Study of Double Strangeness System with an
Emulsion-counter Hybrid Method

Stage 2K1.8

E08

A. Krutenkova

ITEP

Pion double charge exchange on oxygen at J-PARC

Stage 1K1.8

E10A. Sakaguchi,
T. Fukuda

Osaka U

Production of Neutron-Rich Lambda-Hypernuclei with the
Double Charge-Exchange Reaction (Revised from Initial P10)

Stage 2

K1.8

E11

T. Kobayashi

KEK

Tokai-to-Kamioka (T2K) Long Baseline Neutrino Oscillation
Experimental Proposal

Stage 2neutrino

Day1

Day1

1

2

K1.8

E13

H. TamuraTohoku U

Gamma-ray spectroscopy of light hypernuclei

Stage 2

E14

T. Yamanaka

Osaka U

– Experiment at J-PARC
Proposal for KL -> p0 n nStage 2K1.8

E15

M. Iwasaki,
T. Nagae

RIKEN, Kyoto U

A Search for deeply-bound kaonic nuclear states by in-flight
3He(K–, n) reaction

Stage 2

E16

S. Yokkaichi

RIKEN

Electron pair spectrometer at the J-PARC 50-GeV PS to explore the chiral symmetry in QCD

Stage 1E17

R. Hayano,
H. Outa

U Tokyo, RIKEN

Precision spectroscopy of Kaonic 3He 3d->2p X-rays

Stage 2E18

H. Bhang,
H. Outa,
H. Park

SNU, RIKEN, KRISSCoincidence Measurement of the Weak Decay of 12LC and thethree-body weak interaction process

Stage 1E19

M. Naruki

KEK

High-resolution Search for Q+ Pentaquark in p-p -> K-X Reactions

Stage 2

E21

Y. KunoOsaka U

An Experimental Search for μ − e Conversion at a Sensitivityof 10−16 with a Slow-Extracted Bunched BeamStage 1

New
beamline

E22

S. Ajimura,
A. Sakaguchi

Osaka U

Exclusive Study on the Lambda-N Weak Interaction in A=4
Lambda-Hypernuclei (Revised from Initial P10)

Stage 1K1.8

T25

S. Mihara

KEK

Extinction Measurement of J-PARC Proton Beam at K1.8BR

test experiment

K1.8BRKL
Day1

K1.8BR
High pDay1

K1.8BR
K1.8

Day1

K1.8

P26

K. Ozawa

U TokyoDirect measurements of ω mass modifcation in A(π , n) ωreaction and ω -> p0 γ decays

Deferred

K1.8

E27

T. Nagae

Kyoto U

Search for a nuclear Kbar bound state K–pp in the d(p+, K+)
reaction

Stage 1

K1.8

P28

H. Fujioka

Kyoto U

Study of isospin dependence of kaon-nucleus interaction by
in-flight 3He(K– ,n/p) reactions

approved as apart of E15

K1.8BRP29

H. Ohnishi

RIKEN

Study of in medium mass modification for phi meson usingphi meson bound state in nucleus

Deferred

K1.1

E31

H. Noumi

Osaka USpectroscopic study of hyperon resonances below KN threshold via the (K–, n) reaction on DeuteronStage 1K1.8BR

test experiment

K1.1BR–

T32

A. Rubbia

ETH, Zurich

Towards a Long Baseline Neutrino and Nucleon Decay Experiment with a next-generation 100 kton Liquid Argon TPC
detector at Okinoshima and an intensity upgraded J-PARC
Neutrino beam

P33

H. M. Shimizu

KEK

Measurement of Neutron Electric Dipole Moment

Deferred

Linac

P34

N. Saito,
M. Iwasaki

KEK, RIKENAn Experimental Proposal on a New Measurement of theMuon Anomalous Magnetic Moment g-2 and Electric Dipole
Moment at J-PARC

Deferred

MLF

P35

T. Kajita

ICRR, Tokyo

A test experiment to measure sub-GeV flux in the on-axis
direction at the J-PARC neutrino beam

to be Decidedby E11 and Lab

Organization and Committees

Organization and Committees     J-PARC Annual Report 200956

Organization structure(as of April 2009)
Accelerator Section㸇
L: K. Hasegawa
Accelerator Section㸈
L: M. Kinsho
Accelerator Division
L: A. Ando
DL: H. Yoshikawa

Abbreviations
L: Leader
DL: Deputy Leader

Accelerator Section㸉
L: H. Yoshikawa
Accelerator Section㸊
L: K. Kikuchi
Accelerator Section㸋
L: T. Koseki
Accelerator Section㸌
L: N. Yamamoto
Neutron Source Section
L: M. Futakawa
DL: M. Kaminaga

Materials and Life
Science Division
L: Y. Ikeda
DL: S. Ikeda
DL: M. Arai

Neutron Science Section
L: T. Kamiyama
DL: K. Aizawa
Nertron Instrument Section
L: K. Soyama
Muon Science Section
L: Y. Miyake

JAEA President

Deputy Director,
J-PARC Center
Y. Ikeda

Particle and Nuclear
Physics Division
L: T. Kobayashi
DL: N. Saito

Steering Committee
International Advisory
Committee
Safety Committee

Transmutation Section
L: H. Oigawa
DL: K. Tsujimoto

Director,
J-PARC Center

Cryogenics Section
L: T. Ogitsu
DL: Y. Makida

S. Nagamiya

KEK Director

Deputy Director,
J-PARC Center

Safety Division

H. Kobayashi

L. T. Miura
DL: H. Nakashima

Users Consultative
Committee

Radiation Safety Section
L: Y. Miyamoto
DL: M. Numajiri
Health and General Safety
Section
L: T. Miura
Management Supporting
Section
L: Y. Ikeda
DL: S. Ishiyama
Information System
Section
L: A. Manabe
DL: K. Gorai
Public Relations Section
L: K. Suzuki

Administration Division
L: M. Murasawa
DL: S. Shinohara

General Affairs Section
L: S Shinohara
DL: T. Watanabe
Users Affairs Section
L: K. Fujita
DL: T. Yokoo
Users Office Team
Utilization
Promotion TeamInternational
Relations TeamJ-PARC Annual Report 2009     Organization and Committees

57

Members of the committees organized for J-PARC(as of March 2010)

1) Steering Committee
Yasuhiko Fujii
Hideo Hirayanma
Yukihide Kamiya
Satoru Kondo
Shoji Nagamiya
Sohei Okada
Osamu Shimomura
Fumihiko Takasaki
Hiroshi Uetsuka
Michio Yamada
Hideaki Yokomizo

Japan Atomic Energy Agency, Japan
High Energy Accelerator Research Organization, Japan
High Energy Accelerator Research Organization, Japan
Japan Atomic Energy Agency, Japan
J-PARC Center, Japan
Japan Atomic Energy Agency, Japan
High Energy Accelerator Research Organization, Japan
High Energy Accelerator Research Organization, Japan
Japan Atomic Energy Agency, Japan
High Energy Accelerator Research Organization, Japan
Japan Atomic Energy Agency, Japan

2) International Advisory Committee
Ian Anderson
Sergio Bertolucci
Bernard Frois
Hidetoshi Fukuyama
Stuart Henderson
Young-Kee Kim
Hugh Montgomery
Jean-Michel PoutissouThomas Roser
Tsumoru Shintake
Hoerst Stoecker
Satoru Tanaka
Andrew Taylor
Eiko TorikaiJohn W. WhiteOak Ridge National Laboratory, USA
CERN, Switzerland
CEA-Saclay, FranceTokyo University of Science, JapanOak Ridge National Laboratory, USA
Fermi National Accelerator Laboratory, USA
Thomas Jefferson National Accelerator Facility, USA
TRIUMF, Canada
Brookhaven National Laboratory, USA
RIKEN, Japan
GSI, Germany
University of Tokyo, Japan
Rutherford Appleton Laboratory and ISIS, UK
University of Yamanashi, Japan
Australian National University, Australia (chair)

3) Users Consultative Committee for J-PARC
Hiroaki Aihara
Yasuhiko Fujii
Toshiharu Fukunaga
Yoshiaki Fukushima
Makoto Hayashi
Tomohiko Iwasaki
Shinichi Kamei
Toshiji Kanaya
Yoshiaki Kiyanagi
Takashi Kobayashi
Yasuhiro Miyake
Tomofumi Nagae
Tsuyoshi Nakaya
Kazuma Nakazawa
Nobuhiko Nishida

University of Tokyo, Japan
Japan Atomic Energy Agency, Japan
Kyoto University, Japan
Toyota Central R&D Labs., Inc., Japan
Ibaraki Prefecture, Japan
Tohoku University, Japan
Mitsubishi Research Institute, Inc., Japan
Kyoto University, Japan
Hokkaido University, Japan
High Energy Accelerator Research Organization, Japan
High Energy Accelerator Research Organization, Japan
Kyoto University, Japan
Kyoto University, Japan
Gifu University, JapanTokyo Institute of Technology, Japan

Organization and Committees     J-PARC Annual Report 2009

58
Kazumi Nishijima
Naohito Saito
Hideyuki Sakai
Mamoru Sato
Mitsuhiro Shibayama
Hirokazu Tamura
Eiko Torikai
Kazuyoshi Yamada
Taku Yamanaka

Mochida Pharmaceutical Co., Ltd., Japan
High Energy Accelerator Research Organization, Japan
University of Tokyo, Japan
Yokohama City University, Japan
University of Tokyo, Japan
Tohoku University, Japan
University of Yamanashi, Japan
Tohoku University, Japan
Osaka University, Japan (chair)

4) Accelerator Technical Advisory Committee
David Findlay
Roland Garoby
John Galambos
Stephen Holmes
Akira Noda
Peter Ostroumov
Uli Ratzinger
Thomas Roser
Jie Wei

Rutherford Appleton Laboratory, UK
CERN, Switzerland
Oak Ridge National Laboratory, USA
Fermi National Accelerator Laboratory, USA
Kyoto University, Japan
Argonne National Laboratory, USA
Frankfurt University, Germany
Brookhaven National Laboratory, USA (chair)
Tsinghua University, China

5) Neutron International Advisory Committee
Günter Bauer
Stephen Bennington
Kurt Clausen
John Haines
Toshiji Kanaya
Yoshiaki Kiyanagi
Dan Neumann
Robert Robinson
Kazuyoshi Yamada

Forschungszentrum Jülich GmbH (retired), Germany
Rutherford Appleton Laboratory, UK
Paul Scherrer Institute, Switzerland
Oak Ridge National Laboratory, USA
Kyoto University, Japan
Hokkaido University, Japan
National Institute of Standards and Technology, USA (chair)
Australian Nuclear Science and Technology Organization, Australia
Tohoku University, Japan6) Muon Science Advisory Committee
Jun Akimitsu
Hiroshi Amitsuka
Robert Cywinski
Elvezio Morenzoni
Jean-Michel Poutissou
Atsushi Shinohara
Jeff E. Sonier
Eiko Torikai

Aoyama Gakuin University, Japan
Hokkaido University, Japan
University of Huddersfield
Paul Scherrer Institute, Switzerland (chair)
TRIUMF, Canada
Osaka University, Japan
Simon Fraser Uiversity, Canada
University of Yamanashi, Japan

7) Radiation Safety Committee
Yoshihiro Asano
Shuichi Ban
Hideo Hirayama
Kenjiro Kondo
Takeshi Murakami
Tetsuo Noro
Kotaro Sato

RIKEN, Japan
High Energy Accelerator Research Organization, Japan
High Energy Accelerator Research Organization, Japan
High Energy Accelerator Research Organization, Japan
National Institute of Radiological Sciences, Japan
Kyushu University, Japan
High Energy Accelerator Research Organization, Japan

J-PARC Annual Report 2009     Organization and Committees

59
Seiichi Shibata
Hiroshi Uetsuka
Yoshitomo Uwamino
Yoshihiro Yamaguchi
Makoto Yoshida

Kyoto University, Japan (chair)Japan Atomic Energy Agency, JapanRIKEN, Japan
Japan Atomic Energy Agency, Japan
Japan Atomic Energy Agency, Japan

8) MLF Advisory Board
Masatoshi Arai
Kazuhisa Kakurai
Toshiharu Fukunaga
Yasuhiko Fujii
Makoto Hayashi
Susumu Ikeda
Yujiro Ikeda
Ryosuke Kadono
Shinichi Kamei
Takashi Kamiyama
Toshiji Kanaya
Yoji Koike
Teiichiro Matsuzaki
Yasuhiro Miyake
Junichiro Mizuki
Nobuhiko Nishida
Yukio Noda
Mamoru Sato
Hideki Seto
Mitsuhiro Shibayama
Hirohiko Shimizu
Jun Sugiyama
Junichi Suzuki
Kazuyoshi Yamada

Japan Atomic Energy Agency, Japan
Japan Atomic Energy Agency, Japan
Kyoto University, Japan
Japan Atomic Energy Agency, Japan
Ibaraki Prefecture, Japan
High Energy Accelerator Research Organization, Japan
Japan Atomic Energy Agency, Japan
High Energy Accelerator Research Organization, Japan
Mitsubishi Research Institute, Inc., Japan
High Energy Accelerator Research Organization, Japan
Kyoto University, Japan
Tohoku University, JapanRIKEN, Japan
High Energy Accelerator Research Organization, Japan
Japan Atomic Energy Agency, JapanTokyo Institute of Technology, Japan
Tohoku University, Japan
Yokohama City University, Japan
High Energy Accelerator Research Organization, Japan
University of Tokyo, Japan
High Energy Accelerator Research Organization, Japan
Toyota Central R&D Labs., Inc., Japan
Japan Atomic Energy Agency, Japan
Tohoku University, Japan (chair)

9) Nuclear and Particle Physics Experiments at the J-PARC 50 GeV Proton Synchrotron Program
Advisory Committee (~March 2010)
Augusto Ceccucci
Hideto Enyo
Avraham Gal
Kaoru Hagiwara
Shunzo Kumano
Toshinori Mori
Yasuki Nagai
Satoshi Nakamura
Takashi Nakano
Jen-chieh Peng
Michael Shaevitz
Susumu Shimoura
Robert S. Tschirhart
Hitoshi Yamamoto
Katsuo Tokushuku

CERN, Research Physicist
RIKEN Wako institute, Senior Researcher
The Hebrew University, ISRAEL, Faculty of Science, Professor
High Energy Accelerator Research Organization, ISPN, Theory Division, Professor
High Energy Accelerator Research Organization, ISPN, Theory Division, Professor
ICEPP, University of Tokyo, Professor
Osaka University, Professor, Emeritus, JAEA, Guest Researcher
Tohoku University, Graduate school of science, Associate Professor
Research Center for Nuclear Physics, Osaka University, Professor
University of Illinois, Dept. of Physics, Professor
Columbia University, Dept. of Physics, Professor
CNS, University of Tokyo, Graduate school of science, Professor
Fermi National Accelerator Laboratory, Research Physicist
Tohoku University, Graduate school of science, Professor
High Energy Accelerator Research Organization, ISPN, Physics Division 2, Professor

Organization and Committees     J-PARC Annual Report 200960

BudgetBudget Profile(Construction)
200

Oku Yen (Oku = 10**8)

180

JAEA
Construction
After Construction
Government Direct
Government Supplemental

160
140
120

KEK

100

Construction
After Construction

80
60
40
20
0 JAEA
2000

JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK

2001

2002

2003

2004

2005

2006

2007

Fiscal Year

Construction
Started

2008

2009

2010

Completionof Phase-1

Initial Construction (JAEA) = 858 Oku Yen (56%)    After Construction (JAEA) = 200 Oku Yen incl. > 2010
Initial Construction (KEK) = 666 Oku Yen (44%)    After Construction (KEK) = 18 Oku Yen incl. > 2010

Budget Profile(Operation)
200
JAEA
Operational
Government Direct

Oku Yen (Oku = 10**8)

180
160
140
120
100

KEK

Full Power(9 cycles; 200 days)

6 cycles5 cyclesOperational
JAEA Goal
KEK Goal

80
60
40
20
0 JAEA
2005

JAEA KEK JAEA KEK JAEA KEK JAEA KEK JAEA KEK

2006

2007

2008

2009

Completionof Phase-1

2010

2011

2012

2013

2014

2015

Fiscal Year

Notes;
Operational budget does not include salaries for JAEA and KEK.   It includes, however, outsourcing personnel’s.
A new budget frame was adopted on the basis of the Law for the Promotion of Public Utilization of the Specific Advanced Large Facilities which was established on July 1, 2009.

Main Parameters

Main Parameters     J-PARC Annual Report 200962
Present main parameters of Accelerator
Linac
Acclerated . Particles
EnergyPeak Current
Pulse Width
Repetition Rate
Freq. of RFQ, DTL, and SDTL

Negative hydrogen
181 MeV
15mA for user program
0.5 ms
25 Hz
324 MHzRCS

Circumference
Injection Energy
Extraction Energy
Repetition Rate
RF Frequency
Harmonic Number
Number of RF cavities
Number of Bending Magnet

348.333 m
181 MeV
3 GeV
25 Hz
0.938 MHz → 1.67 MHz2
1124
Main Ring

Circumference
Injection Energy
Extraction Energy
Repetition Rate
RF Frequency
Harmonic Number
Number of RF cavities
Number of Bending Magnet

1567.5 m
3 GeV
30 GeV~0.3 Hz1.67 MHz → 1.72 MHz
9596

Key parameters of Materials and Life Science Experimental Facility
Injection energy

3 GeV

Repetition rate

25 Hz

Neutron source
Target material
Number of moderators
Moderator material
Moderator temperature/pressure
Number of neutron beam ports
Muon production target
Target material
Number of muon beam extraction ports

Mercury
3
Supercritical hydrogen
20K/ 1.5 MPa
23Graphite4

Neutron instruments*
Open for user program (general use)
Under commissioning/construction

9
3/6

Muon instruments*
Open for user program (general use)
Under commissioning

1
1(* as of March, 2010)

Events

Events     J-PARC Annual Report 200964

EventsJuly 6, 2009
Commemoration Ceremony Marks the J-PARC’s Completion
On July 6, 2009, a commemoration ceremony marking the completion of J-PARC was held in KUDAN KAIKAN, Tokyo. About
900 people attended it, and 60 of them were from abroad.  During the ceremony, we announced the completion of the first phaseof construction. Mr. Shionoya, Minister of Education, Culture, Sports, Science and Technology, expressed his great expectations for
J-PARC, just like many other international guests and researchers.
From left:
President Toshio Okazaki of JAEA,
Director Shoji Nagamiya of J-PARC Center,
Director General Atsuto Suzuki of KEK.

Ryu Shionoya,
Minister of Education,
Culture, Sports, Scienceand Technology

Makoto Kobayashi,
Professor emeritus of KEK

Researchers from overseas took the stage.

From right:
Thom Mason/Director at Oak Ridge National Laboratory,
Erich Vogt/Previous Director at TRIUMF,John White/Professor at Australian National University,
Dong-Pil Min/Chairman, Korea Research Council of Fundamental
Science and Technology (KRCFST),
Leonid Ponomarev/Director of Russian MUCATEX and member of theRussian Academy of Sciences.

J-PARC Annual Report 2009     Events

65

August 1, 2009
J-PARC Open House
On August 1, 2009, J-PARC was open to the public, that is, the three accelerators, which were stopped for the periodical summer maintenance (LINAC, the 3 Gev synchrotron, and the 50 Gev synchrotron) and the three experimental facilities (Materials andLife Science Experimental Facility, Hadron Experimental Facility, and Neutrino Experimental Facility). Thanks to the warm weather,
there were as many as 4700 visitors (3700 for J-PARC), which was the largest number that we have ever had.

Visitors to RCS.

Visitors to MLF.

November 9 – 12, 2009
The International Workshop on Pulsed Spallation Neutron Sources, Tokai, Ibaraki, Japan.
The neutron source section members of J-PARC and 4 staffs of SNS at Oak Ridge National Laboratory in USA eagerly discussed
the common issues concerning the pulsed spallation neutron sources operated with the high power beam of mega-watt on thebasis of the operational experiences in both facilities so far.  6 members of the European Spallation Source project team and 9
members of the China Spallation Neutron Source project team also participated in exchanging information for their own planning facilities. The satellite workshop on the cavitation damage mitigation technology for mercury target was also held in parallelon November 11 and 12.

Discussion at a conference room

Events     J-PARC Annual Report 2009

66

December 1, 2009
Social Gathering with the Foreign Users
On December 1, 2009, many foreign researchers, Mr. Murakami, the Tokai village mayor and people employed by J-PARC assembled for a social gathering. It was a fruitful meeting, at which they discussed their research and impressions of the life in Japan.

Attendees of the social gathering

March 29 – 31, 2010
The First MLF Symposium, Tokai, Ibaraki, Japan.
Over 220 participants from universities, academic institutes, and companies attended and discussed many topics such as superconductivity, Li-ion batteries, mechanical engineering, protein structures, etc. as well as the progress of neutron source facility,
muon target, neutron and muon instrumentations.

J-PARC Annual Report 2009     Events

67

Prominent Visitors to J-PARC in 2009

Ikuo Kamei, Upper House
Member (April. 27)

Seiko Noda,
Sadakazu Tanigaki, Lower
Minister of State for Science and Technol- House Member (July, 7)
ogy Policy (July, 3)

Hudi Hastowo, Head of The National Nuclear
Energy Agency of Indonesia (BATAN) (October, 8)Masaharu Nakagawa,
Deputy Minister of Education,
Culture, Sports, Science andTechnology (December, 18)

The Committee on Education, Culture, Sports, Science and Technology of the Houseof Representatives (March, 31)(Right) Makiko Tanaka, Committee Chairperson

More Than 30,000 People Visited J-PARC
The number of J-PARC’s visitors for the period from April 2005 to the end of January 2010 exceeded 30,000. Regular people
and local residents, junior-high and high school students and teachers accounted for the half of that number.

Public Offices
Junior‐high/Highschool
students, teachers
Business

7%

8%

9%

2%

22%

Local residents

11%

Media
University
students, experts
VIP, lawmakers
Foreigners

2%
28%

11%

In‐house

Director Nagamiya, of the J-PARC Center, explains the facility
to citizens of Falls, Idaho, the sister city of Tokai village (August 2008).

Events     J-PARC Annual Report 2009

68

Summaries of International Advisory Committees
International Advisory Committee
The International Advisory Committee was held on March 15 and 16
in 2010.  The committee congratulated
the success that all the elements are
running nicely.  On the other hand, thecommittee pointed out much smoother organizational structure by having
mirror image of the two organizations.
In addition, the most urgent issue is to
go to 1 MW as quickly as possible.  It

was pointed out to us that the financial
arrangement must be planned carefully and, at the same time, rigorously.

The ninth meeting of Accelerator Technical Advisory Committee (ATAC).
The ninth meeting of ATAC washeld on March 11 to 13 in 2010.   Dr.
Thomas Roser of BNL succeeded Stephen Holmes of FNAL as the chair.
Following the presentations by the accelerator members of J-PARC, enthusi-

astic and frank discussions were made,in particular, towards a steady and fast
realization of 1 MW at RCS and 0.75 MW
at MR fast extraction.  The importanceof a comprehensive scheduling was
also pointed out because the common

use of both MLF and MR must proceedwith an approval of machine time forusers consistent with the construction
and the beam commissioning of the
LINAC energy upgrade to 400 MeV.

Neutron International Advisory Committee (NIAC).
The NIAC was newly organized infiscal year 2009 and held on February
24 to 26 in 2010, in which Dr. Dan Neumann (National Institute of Standards
and Technology, US) is acting the chair.
Previously this was a technical advi-

sory committee for the neutron target
technology and engineering and has
been organized seven times since fiscal year 2002.  Because Materials andLife Science Experimental Facility has
started the user program since 2008,

the mission of the committee has beenchanged so that it gives advice on organization, operation, safety, instrumentation and target station.

8th Muon Science Advisory Committee (MuSAC-8)
The MuSAC-8 was held on March
11 and 12 in 2010.   The committee(chair: Dr. E. Morenzoni from PSI) expressed congratulation to all thepeople involved at J-PARC MUSE fortheir many achievements since thefirst successful extraction of muon
beam.  The committee was pleased tohear about the successes of the muonuser program, which include the firstrefereed journal publication from JPARC by S. Takeshita, et al.  The committee reinforced the support of theultra slow muon beam line for µSR asa top priority, and acknowledged theprogress that was made thus far in its
design.   The committee concluded
that the highest priority should be tosecure funding for fully developing
this beam line, as it would promise

to be a unique tool for novel experiments in nano-materials research.  Thecommittee expressed their convictionthat this beam line would have great
potential even at reduced power, andthat it would attract users from aroundthe globe, suggesting the importanceto involve the condensed matter physics and materials science communities
in this unique opportunity.

Main Ring (MR), Nuclear and Particle
Physics Facility (HD), and Neutrino Facility (NU).  The main points were theenlargement of two secondary beamlines in HD: K1.8 and KL, and the beamintensity upgrade in MR and NU.   Atnext, the 8th meeting was held on
December 15, 2009, at which the application of HD was discussed.  The main
point was the enlargement of two secondary beam lines in HD: K1.1BR andKL.

Radiation Safety Committee
The Radiation Safety Committee
met twice in fiscal year 2009.  The seventh meeting was held on June 2, 2009
to discuss the application of 3 GeV
Rapid Cycling Synchrotron, Materials
and Life Science Experimental Facility,

J-PARC Annual Report 2009     Events

69

Dates for Committees
1) Steering Committee
May 1st, 2009  @Nuclear Science Research Institute, JAEA, Tokai, Ibaraki
June 30th, 2009 @Ibaraki Quantum Beam Research Center, Tokai, Ibaraki
September 29th, 2009 @Ibaraki Quantum Beam Research Center, Tokai, Ibaraki
December 24th, 2009 @ Ibaraki Quantum Beam Research Center, Tokai, Ibaraki
2) User Consultative Committee
October 28th, 2009 @Tokyo Office, JAEA
3) MLF Advisory Board
7th Board: September 7th, 2009 @Tokyo Office, JAEA
8th Board: March 17th, 2010 @Nuclear Science Research Institute, JAEA
4) Program Advisory Committee for Nuclear and Particle Physics Experiments at the J-PARC 50GeV Proton Synchrotron
8th Committee: July 17th - 19th @Tsukuba campus, KEK
9th Committee: January 15th - 17th @Tsukuba campus, KEKPublications

Publications     J-PARC Annual Report 200972

Publications in Periodical Journals
A-001
Maekawa, F.
J-PARC 1MW pulsed spallation neutron
sourceActivation Analysis, vol. 25, p. 15 (2010)
A-002
Ogura, K. et al.
Proton-induced nuclear reactions using
compact high-contrast high-intensity laser
Appl. Phys. Express, vol. 2, p. 066001_1 (2009)
A-003
Yamamoto, K. et al.
Estimation of secondary electron effect in
the J-PARC rapid cycling synchrotron after
first study
Appl. Surf. Sci., vol. 256, p. 958 (2009)
A-004
Nagamiya, S.
Appointed to President-Elect for the
Physical Society
Butsuri, vol. 65, p. 69 (2010)
A-005
Nagamiya, S.
Coming up a new facility J-PARC
Butsuri, vol. 65, p. 108 (2010)
A-006
Onuki, T. et al.
Concurrent transformation of Ce(III) andformation of biogenic manganese oxides
Chem. Geol., vol. 253, p. 23 (2008)
A-007
Shen, G. et al.
Tuning of RF amplitude and phase for thedrift tube linac in J-PARC
Chinese Phys. C, vol. 33, p. 577 (2009)
A-008
Kato, T. et al.
Cryogenic hydrogen system for a spallation
neutron source in J-PARC
Cryo. Eng., vol. 43, p. 409 (2008)
A-009
Nagamiya, S.
Multi-Purposed Facility - J-PARC
Energy Review, vol. 28, p. 7 (2008)
A-010
Ukon, S. et al.
Radiation resistant cable
Fujikura Giho, vol. 3, p. 26 (2008)
A-011
Nagamiya, S.

Research Curiocity and Nobel Prize
Gakujyutu-no-doukou, June Issue, p. 1 (2009)
A-012
Nagamiya, S.
Birth of J-PARC
Hamon, vol. 18, p. 7 (2008)
A-013
Tatsumoto, H.
Through development of the cryogenichydrogen system for the spallation neutron
source in J-PARC
Hamon, vol. 19, p. 4 (2009)
A-014
Maruyama, R.
Effect of roughness correlation on diffuse
intensity in a neutron supermirror
Hamon, vol. 19, p. 9 (2009)
A-015
Takahashi, N.
Construction of a novel backscattering
spectrometer DNA at J-PARC
Hamon, vol. 19, p. 14 (2009)A-016
Kajimoto, R. et al.
4D space access neutron spectrometer
4SEASONS (SIKI)
Hamon, vol. 20, p. 8 (2010)
A-017
Oikawa, K. et al.
Launch of NOBORU (BL10)
Hamon, vol. 20, p. 34 (2010)
A-018
Hattori, T. et al.
Design concept and the current
construction state of J-PARC high-pressure
neutron diffractometer PLANET
Hamon, vol. 20, p. 39 (2010)
A-019
Sasaki, S. et al.
W-values for Heavy Ions in Gases
IEEE Nucl. Sci. Conf. R., vol. 2009, p. 702 (2009)(The 2009 IEEE Nucelar Science Symposiumand Medical Imaging Conference)
A-020
Saito K. et al.
Scintillation Mechanism in Helium Mixedwith Xenon
IEEE Nucl. Sci. Conf. R., vol. 2009, p. 1521 (2009)(The 2009 IEEE Nucelar Science Symposiumand Medical Imaging Conference)

A-021
Ohshita, H. et al.
Performance of a Neutron Beam Monitor
with a GEM for the High-Intensity Total
Diffractometer at J-PARC
IEEE Nucl. Sci. Conf. R., vol. 2009, p. 2286 (2009)(The 2009 IEEE Nucelar Science Symposiumand Medical Imaging Conference)
A-022
Tatsumoto, H. et al.
Numerical analysis of forced convection
heat transfer of subcooled liquid nitrogen
IEEE T. Appl. Supercon., vol. 18, p. 1483 (2008)(20th International Conference on Magnet
Technology (MT-20))
A-023
Ogitsu, T. et al.
Status of superconducting magnet system
for the J-PARC neutrino beam line
IEEE T. Appl. Supercon., vol. 19, p. 1081 (2009)(The 2008 Applied Superconductivity
Conference)
A-024
Okamura, T. et al.
Test results of superconducting magnets
for the J-PARC neutrino beam line
IEEE T. Appl. Supercon., vol. 19, p. 1125 (2009)(The 2008 Applied Superconductivity
Conference)
A-025
Sakasai, K. et al.
Detection of fast neutron by storage
phosphors with low g-ray sensitivity
IEEE T. Nucl. Sci., vol. 55, p. 2352 (2008)(2007 IEEE Nuclear Science Symposium andMedical Imaging Conference)
A-026
Nagamiya, S.
Positive and negative aspects in Science
Isotope News, vol. 649, p. 1 (2008)
A-027
Enomoto, S. et al.
New utilization and promotion of RIIsotope News, vol. 657, p. 2 (2009)
A-028
Fujii, Y. et al.
Japan Proton Accelerator Research Complex(J-PARC); Materials and Life Science Facility
J. Appl. Phys. Jpn., vol. 78, p. 758 (2009)
A-029
Maruyama, R. et al.
Effect of interfacial roughness correlation

J-PARC Annual Report 2009     Publications

73
on diffuse scattering intensity in a neutron
supermirror
J. Appl. Phys., vol. 105, p. 083527_1 (2009)
A-030
Kubo, J. et al.
Improvement of poly (vinyl alcohol)
properties by the addition of magnesium
nitrateJ. Appl. Polym. Sci., vol. 112, p. 1647 (2009)
A-031
Nagamiya, S.
Moving toward an opening at J-PARC
J. Atom. Energy Soc. Jpn., vol. 50, p. 758 (2008)
A-032
Oyama, Y. et al.
Quantum beams open up the future, 3
J. Atom. Energy Soc. Jpn., vol. 51, p. 14 (2009)
A-033
Nagamiya, S.
Low-temperature technology and its history
J. Cryogenic Soc, Jpn., vol. 43, p. 131 (2008)
A-034
Ikeda, Y.
Overview of Japan Proton Accelerator
Research Complex (J-PARC) project andMaterials and Life Science Experimental
Facility (MLF)
J. Crystall. Soc. Jpn., vol. 50, p. 2 (2008)
A-035
Ohara, T. et al.
Direct observation of crystalline-state
reactions by single crystal neutron
diffraction analyses
J. Crystall. Soc. Jpn., vol. 50, p. 98 (2008)
A-036
Yoshiasa, A. et al.
High pressure and high temperature EXAFS
and diffraction study of AgI (MS35)
J. Crystall. Soc. Jpn., vol. 51, p. 66 (2009)
A-037
Kurata, Y. et al.
Corrosion of CrN-coated steels for nuclear
reactors in liquid Pb-Bi
J. Jpn. Inst. Met., vol. 72, p. 470 (2008)
A-038
Kurata, Y. et al.
Corrosion behavior of steels in liquid leadbismuth with low oxygen concentrations
J. Nucl. Mater., vol. 373, p. 164 (2008)
A-039
Yoshiie, T. et al.
Reaction kinetics analysis of damage
evolution in accelerator driven systembeam windows
J. Nucl. Mater., vol. 377, p. 132 (2008)(8th International Workshop on Spallation
Materials Technology (IWSMT-8))
A-040
Nagata, S. et al.
Damage process and luminescentcharacteristics in silica glasses under ion
irradiation
J. Nucl. Mater., vol. 386-388, p. 1045 (2009)(13th International Conference on Fusion
Reactor Materials (ICFRM-13))
A-041
Kurata, Y. et al.
Characterization and re-activation of oxygen
sensors for use in liquid lead-bismuth
J. Nucl. Mater., vol. 398, p. 165 (2010)(9th International Workshop on Spallation
Materials Technology (IWSMT-9))
A-042
Takada, H. et al.
Validation of JENDL high-energy file throughanalyses of spallation experiments at incident
proton energies from 0.5 to 2.83 GeV
J. Nucl. Sci. Technol., vol. 46, p. 589 (2009)
A-043
Haga, K. et al.
Mockup experiments to investigate theleak rate correlation between mercury andhelium for the mercury target system of
J-PARCJ. Nucl. Sci. Technol., vol. 46, p. 1145 (2009)
A-044
Suzuki, H. et al.
Pitting damage and residual stress inducedby cavitation erosion on mercury target
vesselJ. Nucl. Sci. Technol., vol. 47, p. 136 (2010)
A-045
Ogiwara, N. et al.
Reduction of hydrogen content in pure Ti
J. Phys. Conf. Ser., vol. 100, p. 092024_1 (2008)(17th International Vacuum Congress (IVC17)/13th International Conference on Surface
Science (ICSS-13)/International Conference on
Nanoscience and Technology (ICN+T2007) )A-046
Fukuda, T. et al.
Lattice dynamics of LaFeAsO(1-x)Fx and
PrFeAsO(1-y) via inelastic X-ray scatteringand first-principles calculation
J. Phys. Soc. Jpn., vol. 77, p. 103715_1 (2008)
A-047
Ishikado, M. et al.
Two-dimensional spin density wave statein LaFeAsO
J. Phys. Soc. Jpn., vol. 78, p. 043705_1 (2009)
A-048
Nakamura, M. et al.
First demonstration of novel method for
inelastic neutron scattering measurement
utilizing multiple incident energies
J. Phys. Soc. Jpn., vol. 78, p. 093002_1 (2009)
A-049
Takeda, M. et al.
Nematic-to-smectic transition of magnetic
texture in conical state
J. Phys. Soc. Jpn., vol. 78, p. 093704_1 (2009)
A-050
Shamoto, S. et al.
Front lines of structural analyses by pulsed
neutron diffraction
J. Plasma Fusion Res., vol. 84, p. 323 (2008)
A-051
Nishitani, T. et al.
Functional materials for diagnostics andplasma control
J. Plasma Fusion Res., vol. 84, p. 635 (2008)
A-052
Ogiwara, N. et al.
The Development of a Pirani vacuum
gauge with a platinum wire in the J-PARC
3-GeV rapid cycling synchrotron
J. Vac. Soc. Jpn., vol. 53, p. 158 (2010)
A-053
Nagamiya, S.
Sciences to be explored at J-PARC
Kagaku, vol. 79, p. 340 (2009)
A-054
Nagamiya, S.
Overview of J-PARC
Lecture Note in Phys., vol. 781, p. 1 (2009)
A-055
Koga, T. et al.
New insight into hierarchical structures ofcarbon black dispersed in polymer matrices;
A Combined small-angle scattering study
Macromolecules, vol. 41, p. 453 (2008)
A-056
Arai, M.
Prospective neutron scattering studies at
J-PARC
Magnetics Jpn., vol. 4, (2009)
A-057
Kikuchi, K.
Introduction of J-PARC
Maintenology, vol. 6, p. 49 (2008)

Publications     J-PARC Annual Report 2009

74
A-058
Arai, M.
New trends in materials science exploredby the new neutron source of J-PARC
Materia Jpn., vol. 48, p. 347 (2009)
A-059
Otsuka, S. et al.
Effect of nano-size oxide particle dispersion
and δ-ferrite proportion on creep strengthof 9Cr-ODS steel
Mater. Trans., vol. 50, p. 1778 (2009)
A-060
Kurata, Y. et al.
Temperature dependence of corrosion of
ferritic/martensitic and austenitic steels in
liquid lead-bismuth eutectic
Mater. Trans., vol. 50, p. 2410 (2009)
A-061
Nagamiya, S.
Expectation toward future J-PARC
Monbu Kagaku Jiho, vol. 1605, p. 10 (2009)
A-062
Bull, M. et al.
Safeguarding neutron facilities
Neutron News, vol. 20, p2 (2009)
A-063
Hori, T. et al.
High power test of 972 MHz waveguidesystems for J-PARC Linac
NIFS-MEMO-55, p. 289 (2008)
A-064
Takeda, M. et al.
Double focusing Heusler monochromatorand analyzer systems for the polarized
neutron triple-axis spectrometer
Nucl. Instrum. Meth. A, vol. 586, p. 229 (2008)
A-065
Iwamoto, Y. et al.
Measurement of thick target neutron yields
at 0° bombarded with 140, 250 and 350
MeV protons
Nucl. Instrum. Meth. A, vol. 593, p. 298 (2008)
A-066
Murata, I. et al.
Angle-correlated spectrum measurement
for two neutrons emitted from (n,2n)reaction with the coincidence detection
technique using a pencil-beam DT neutron
sourceNucl. Instrum. Meth. A, vol. 595, p. 439 (2008)
A-067
Shen, G. et al.
Tuning of RF amplitude and phase for the
separate-type drift tube linac in J-PARC

Nucl. Instrum. Meth. A, vol. 598, p. 361 (2009)
A-068
Iwamoto, Y. et al.
Measurements of double-differential
neutron-production cross-sections for the9Be(p,xn) and 9Be(d,xn) reactions at 10 MeV
Nucl. Instrum. Meth. A, vol. 598, p. 687 (2009)
A-069
Ikeda, Y.
J-PARC status update
Nucl. Instrum. Meth. A, vol. 600, p. 1 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-070
Futakawa, M. et al.
Development of the Hg target in the
J-PARC neutron source
Nucl. Instrum. Meth. A, vol. 600, p. 18 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-071
Miyake, Y. et al.
J-PARC muon source, MUSE
Nucl. Instrum. Meth. A, vol. 600, p. 22 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-072
Bakule, P. et al.
Prospects for ultra-low-energy muon beamat J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 35 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-073
Meigo, S. et al.
Beam commissioning for neutron andmuon facility at J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 41 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

New pipelined data acquisition system forµSR experiments at J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 53 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-076
Haga, K. et al.
Bubble flow simulations in target vessel
Nucl. Instrum. Meth. A, vol. 600, p. 64 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-077
Maruyama, R. et al.
Development of high-reflectivity neutron
supermirrors using an ion beam sputtering
techniqueNucl. Instrum. Meth. A, vol. 600, p. 68 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-078
Sakai, K. et al.
Construction status of a general control
system for the Materials and Life Science
Experimental Facility (MLF) at J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 75 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-079
Kinoshita, H. et al.
Remote handling devices in MLF
Nucl. Instrum. Meth. A, vol. 600, p. 78 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-080
Hasegawa, S. et al.
Effect of hydrogen loop fluctuation on cold
neutron performance with hybrid control
system in JSNS
Nucl. Instrum. Meth. A, vol. 600, p. 81 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-074
Utsumi, W. et al.
Neutron powder diffraction under highpressure at J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 50 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-081
Oikawa, K. et al.
Engineering design of JSNS shutter system
Nucl. Instrum. Meth. A, vol. 600, p. 84 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-075
Suzuki, S. et al.

A-082
Harada, M. et al.

J-PARC Annual Report 2009     Publications

75
Settlement of Materials and Life Science
Experimental Facility at J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 87 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-083
Takahashi, N. et al.
Study of the analyzer crystals for use in thenear-backscattering spectrometer DNA at
J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 91 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-084
Oishi, R. et al.
Rietveld analysis software for J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 94 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

The super omega muon beamline at J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 132 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-090
Sato, T. J. et al.
Versatile inelastic neutron spectrometer(VINS) project for J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 143 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-091
Makimura, S. et al.
Present status of construction for the muontarget in J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 146 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

Development of a data acquisition subsystem using DAQ-Middleware
Nucl. Instrum. Meth. A, vol. 600, p. 173 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-097
Kai, T. et al.
Users’ beam interlock system at theMaterials and Life Science Experimental
Facility of J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 176 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-098
Higemoto, W. et al.
J-PARC muon control system
Nucl. Instrum. Meth. A, vol. 600, p. 179 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-085
Kogawa, H. et al.
Development on mercury pump for JSNS
Nucl. Instrum. Meth. A, vol. 600, p. 97 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-092
Wakui, T. et al.
Effects of pitting damage and repeatedstresses on lifetime of mercury target
Nucl. Instrum. Meth. A, vol. 600, p. 150 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-099
Higemoto, W. et al.
JAEA-ASRC µSR project at J-PARC MUSE
Nucl. Instrum. Meth. A, vol. 600, p. 182 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-086
Satoh, S. et al.
Development of a readout system
employing high-speed network for J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 103 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-093
Strasser, P. et al.
Alignment and shields in the M2 primary
proton beamline at J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 154 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-100
Kajimoto, R. et al.
Study of the neutron guide design of the
4SEASONS spectrometer at J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 185 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-087
Shinohara, T. et al.
Design and performance analyses of the
new time-of-flight smaller-angle neutron
scattering instrument at J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 111 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-094
Sakasai, K. et al.
Development of neutron detector forengineering materials diffractometer at
J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 157 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-101
Ishigaki, T. et al.
IBARAKI materials design
diffractometer(iMATERIA)-Versatile neutron
diffractometer at J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 189 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-088
Ooi, M. et al.
Developmental status of a server system for
the MLF general control system
Nucl. Instrum. Meth. A, vol. 600, p. 120 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-095
Fujimori, H. et al.
Radiation resistant magnets for the J-PARC
muon facility
Nucl. Instrum. Meth. A, vol. 600, p. 170 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-102
Shimomura, K. et al.
Superconducting muon channel at J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 192 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))

A-089
Nakahara, K. et al.

A-096
Nakayoshi, K. et al.

A-103
Ohhara, T. et al.
Development of data processing softwarePublications     J-PARC Annual Report 200976
for a new TOF single crystal neutron
diffractometer at J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 195 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-104
Tatsumoto, H. et al.
Design of hydrogen vent line for the
cryogenic hydrogen system in J-PARC
Nucl. Instrum. Meth. A, vol. 600, p. 269 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-105
Maekawa, F. et al.
NOBORU; J-PARC BL10 for facility diagnostics
and its possible extension to innovative
instruments
Nucl. Instrum. Meth. A, vol. 600, p. 335 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-106
Mishima, K. et al.
Design of neutron beamline for fundamental
physics at J-PARC BL05
Nucl. Instrum. Meth. A, vol. 600, p. 342 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-107
Ida, M. et al.
On the effect of microbubble injection on
cavitation bubble dynamics in liquid mercury
Nucl. Instrum. Meth. A, vol. 600, p. 367 (2009)(1st J-PARC International Symposium;
International Symposium on Pulsed Neutronand Muon Sciences at J-PARC 2008 (IPS '08))
A-108
Harada, H. et al.
Beam-commissioning study of high-intensity
accelerators using virtual accelerator model
Nucl. Instrum. Meth. A, vol. 602, p. 320 (2009)
A-109
Morishita, T. et al.
The Slow-ground-motion monitoring based on
the hydrostatic leveling system in J-PARC linac
Nucl. Instrum. Meth. A, vol. 602, p. 364 (2009)
A-110
Nakamura, T. et al.
Wavelength-shifting-fibre-based neutron
image detector with a fibre-optic taper toincrease the spatial resolution
Nucl. Instrum. Meth. A, vol. 604, p. 158 (2009)(8th International Conference on Position

Sensitive Detectors (PSD-8))
A-111
Nakamura, T. et al.
A Half-millimetre spatial resolution fibrecoded linear position-sensitive scintillator
detector with wavelength-shifting fibre
read-out for neutron detection
Nucl. Instrum. Meth. A, vol. 606, p. 675 (2009)
A-112
Sanami, T. et al.
A Bragg curve counter with an internal
production target for the measurementof the double-differential cross-section offragment production induced by neutrons
at energies of tens of MeV
Nucl. Instrum. Meth. A, vol. 610, p. 660 (2009)
A-113
Nagamiya, S.
J-PARC Program Overview
Nucl. Phys. A, vol. 827, p. 179c (2009)
A-114
Yashima, H. et al.
Benchmark experiment of neutron
penetration through iron and concrete shields
for hundreds of MeV quasi-monoenergetic
neutrons - I:Measurements of neutron
spectrum by a multimoderator spectrometer
Nucl. Technol., vol. 168, p. 298 (2009)(11th International Conference on Radiation
Shielding (ICRS-11) and 15th Topical Meetingof the Radiation Protection and Shielding
Division (RPSD-2008))
A-115
Hagiwara, M. et al.
Benchmark experiment of neutron
penetration through iron and concrete shields
for hundreds of MeV quasi-monoenergetic
neutrons - II:Measurements of neutron
spectrum by an organic liquid scintillator
Nucl. Technol., vol. 168, p. 304 (2009)(11th International Conference on Radiation
Shielding (ICRS-11) and 15th Topical Meetingof the Radiation Protection and Shielding
Division (RPSD-2008))
A-116
Iwamoto, Y. et al.
Measurement of angular dependent neutron
production from thick target bombarded
with 140-MeV protons
Nucl. Technol., vol. 168, p. 340 (2009)(11th International Conference on Radiation
Shielding (ICRS-11) and 15th Topical Meetingof the Radiation Protection and Shielding
Division (RPSD-2008))
A-117
Nakashima, H. et al.

Experimental studies of shielding andirradiation effects at high-energy accelerator
facilities
Nucl. Technol., vol. 168, p. 482 (2009)(11th International Conference on Radiation
Shielding (ICRS-11) and 15th Topical Meetingof the Radiation Protection and Shielding
Division (RPSD-2008))
A-118
Nakane, Y. et al.
Monte Carlo calculations for the shielding
design of beam injection and extraction
areas at the 3-GeV synchrotron in J-PARC
Nucl. Technol., vol. 168, p. 519 (2009)(11th International Conference on Radiation
Shielding (ICRS-11) and 15th Topical Meetingof the Radiation Protection and Shielding
Division (RPSD-2008))
A-119
Sakamoro, Y. et al.
Generation and application ofbremsstrahlung production data calculatedby EGS4 code
Nucl. Technol., vol. 168, p. 585 (2009)(11th International Conference on Radiation
Shielding (ICRS-11) and 15th Topical Meetingof the Radiation Protection and Shielding
Division (RPSD-2008))
A-120
Sakamoto, Y. et al.
Accelerator experiments on source term
and radiation shielding performed by Japan
Atomic Energy Agency
Nucl. Technol., vol. 168, p. 654 (2009)(11th International Conference on Radiation
Shielding (ICRS-11) and 15th Topical Meetingof the Radiation Protection and Shielding
Division (RPSD-2008))
A-121
Masukawa, F. et al.
Estimation of radioactivity produced incooling water at high-intensity proton
accelerator facility
Nucl. Technol., vol. 168, p. 680 (2009)(11th International Conference on Radiation
Shielding (ICRS-11) and 15th Topical Meetingof the Radiation Protection and Shielding
Division (RPSD-2008))
A-122
Kinoshita, N. et al.
Depth profile of radioactivity induced in the
thick concrete shield in EP1 Beam line at the
kek 12-GeV Proton synchrotron facility
Nucl. Technol., vol. 168, p. 694 (2009)(11th International Conference on Radiation
Shielding (ICRS-11) and 15th Topical Meetingof the Radiation Protection and Shielding
Division (RPSD-2008))

J-PARC Annual Report 2009     Publications

77
A-123
Kirihara, Y. et al.
Comparison of several Monte Carlo codeswith neutron deep penetration experiments
Nucl. Technol., vol. 168, p. 773 (2009)(11th International Conference on Radiation
Shielding (ICRS-11) and 15th Topical Meetingof the Radiation Protection and Shielding
Division (RPSD-2008))
A-124
Matsumura, H. et al.
Adsorption behavior of radionuclides onionexchange resin from cooling water for
the K2K target and magnetic horns
Nucl. Technol., vol. 168, p. 979 (2009)(11th International Conference on Radiation
Shielding (ICRS-11) and 15th Topical Meetingof the Radiation Protection and Shielding
Division (RPSD-2008))
A-125
Arai, M. et al.
Japan Spallation Neutron Source (JSNS) of
J-PARC
Nuclear Physics News, vol. 19, p. 34 (2009)
A-126
Kiriyama, H. et al.
Generation of high-contrast and high-intensity
laser pulses using an OPCPA preamplifier in a
double CPA, Ti:sapphire laser system
Opt. Commun., vol. 282, p. 625 (2009)
A-127
Ida, M.
Multibubble cavitation inception
Phys. Fluids, vol. 21, p. 113302_1 (2009)
A-128
Uchino, T. et al.
In situ X-ray diffraction study of the size
dependence of pressure-induced structuraltransformation in amorphous silica
nanoparticles
Phys. Rev. B, vol. 77, p. 132201_1 (2008)
A-129
Brazhkin, V. V. et al.
Nature of the structural transformations in
B2O3 glass under high pressure
Phys. Rev. Lett., vol. 101, p. 035702_1 (2008)
A-130
Oguri, H. et al.
Status of the Japan Proton Accelerator
Research Complex H– ion source
Phys. Rev. Spec. Top.-AC, vol. 12, p. 010401_1 (2009)
A-131
Shobuda, Y. et al.
Analytical method for the evaluation of field
modulation inside the rf-shielded chamberwith a time-dependent dipole magnetic field
Phys. Rev. Spec. Top.-AC, vol. 12, p. 032401_1 (2009)
A-132
Tamura, F. et al.
Longitudinal painting with large amplitudesecond harmonic rf voltages in the rapid
cycling synchrotron of the Japan Proton
Accelerator Research Complex
Phys. Rev. Spec. Top.-AC, vol. 12, p. 041001_1 (2009)
A-133
Kamiya, J. et al.
Performance of extraction kicker magnet ina rapid cycling synchrotron
Phys. Rev. Spec. Top.-AC, vol. 12, p. 072401_1 (2009)
A-134
Shobuda, Y. et al.
Coupling impedances of a resistive insert ina vacuum chamberPhys. Rev. Spec. Top.-AC, vol. 12, p. 094401_1 (2009)
A-135
Hotchi, H. et al.
Beam commissioning of the 3-GeV rapid
cycling synchrotron of the Japan Proton
Accelerator Research Complex
Phys. Rev. Spec. Top.-AC, vol. 12, p. 40402 (2009)
A-136
Saha, P. K. et al.
Direct observation of the phase space
footprint of a painting injection in the Rapid
Cycling Synchrotron at the Japan Proton
Accelerator Research Complex
Phys. Rev. Spec. Top.-AC, vol. 12, p. 40403 (2009)
A-137
Doyama, M. et al.
Transmission positron microscopes,
application of imaging plates to positron,
electron and muon research and a proposal
for a strong positron source at J-PARC
Phys. Status Solidi C, vol. 6, p. 2471 (2009)
A-138
Miyake, Y. et al.
Birth of an intense pulsed muon source,
J-PARC MUSE
Physica B, vol. 404, p. 957 (2009)(11th International Conference on Muon Spin
Rotation, Relaxation and Resonance)
A-139
Imazato, J. et al.
Measurement of µ+ relaxation rates in Al
and Mg alloys for the precise µ+ transverse
polarization experiment TREK at J-PARC
Physica B, vol. 404, p. 962 (2009)(11th International Conference on Muon Spin
Rotation, Relaxation and Resonance)

A-140
Suzuki, S. et al.
Development of a pipelined data acquisition
system for µSR experiments at J-PARC
Physica B, vol. 404, p. 1002 (2009)(11th International Conference on Muon Spin
Rotation, Relaxation and Resonance)
A-141
Maruyama, R. et al.
A Beam divergence correction mirror forneutron resonance spin echo
Physica B, vol. 404, p. 2594 (2009)(7th International Workshop on Polarized
Neutrons in Condensed Matter Investigations
and 2nd International Symposium of Quantum
Beam Science Directorate of JAEA)
A-142
Shinohara, T. et al.
Design of a neutron polarizer using
polarizing super mirrors for the TOF-SANS
instrument at the J-PARC
Physica B, vol. 404, p. 2640 (2009)(7th International Workshop on Polarized
Neutrons in Condensed Matter Investigations
and 2nd International Symposium of Quantum
Beam Science Directorate of JAEA)
A-143
Okayasu, S. et al.
Aalpha-ray detection with a MgB2 transitionedge sensor
Physica C, vol. 468, p. 1998 (2008)(20th International Symposium on
Superconductivity (ISS 2007))
A-144
Kitazawa, S. et al.
Radiation-induced luminescence from TiO2
by 10-keV N+ ion irradiation
Radiat. Phys. Chem., vol. 77, p. 1333 (2008)(International Symposium on Charged Particle
and Photon Interactions with Matter (ASR 2007))
A-145
Nakashima, H.
Operational radiation protection issues
specific to high-intensity beams
Radiat. Prot. Dosim., vol. 137, p. 35 (2009)
A-146
Arai, M.
The World class neutron source J-PARC to beready for action
Rev. High Pres. Sci. Tech., vol. 19, p. 4 (2009)
A-147
Kiriyama, H. et al.
Temporal contrast and spatial beam quality
improvement techniques in a high intensity
Ti:sapphire laser system
Rev. Laser Eng., vol. 37, p. 425 (2009)

Publications     J-PARC Annual Report 2009

78
A-148
Yogo, A. et al.
Ion acceleration using temporally-controlled
high-intensity laser pulses
Rev. Laser Eng., vol. 37, p. 449 (2009)
A-149
Oguri, H. et al.
Development and operation of a Cs-free
J-PARC H– ion source
Rev. Sci. Instrum., vol. 79, p. 02A506_1 (2008)(12th International Conference on Ion Sources(ICIS 2007))
A-150
Oguri, H. et al.
Recent operation status of Japan Proton
Accelerator Research Complex H– ion source
Rev. Sci. Instrum., vol. 81, p. 02A715_1 (2010)(13th International Conference on Ion Sources(ICIS 2009))
A-151
Okoshi, K. et al.
Development of an H– ion source for Japan
Proton Accelerator Research Complex
upgradeRev. Sci. Instrum., vol. 81, p. 02A716_1 (2010)(13th International Conference on Ion Sources(ICIS 2009))

A-152
Ikegami, K. et al.
A Survey of optimal filament shape in a
Japan Proton Accelerator Research Complex
H– ion source
Rev. Sci. Instrum., vol. 81, p. 02A717_1 (2010)(13th International Conference on Ion Sources(ICIS 2009))
A-153
Ueno, A. et al.
An Innovative high-power constant-current
pulsed-arc power-supply for a high-density
pulsed-arc-plasma ion-source using a LaB6filament
Rev. Sci. Instrum., vol. 81, p. 02A718_1 (2010)(13th International Conference on Ion Sources(ICIS 2009))
A-154
Kartini, E. et al.
Universal dynamics behavior in superionic
conducting glasses
Solid State Ionics, vol. 180, p. 506 (2009)
A-155
Fujii, Y. et al.
The Frontiers of condensed matter scienceadvanced by J-PARC
Solid State Phys., vol. 43, p. 441 (2008)

A-156
Kitazawa, S. et al.
Radiation-induced luminescence from TiO2
by 10 keV O+, N+ and Ar+ ion irradiation
Thin Solid Films, vol. 517, p. 3735 (2009)
A-157
Yamazaki, T. et al.
Buried H monolayer at hetero-interface
between highly mismatched Sr films and Si
substrates
Transactions of the Materials Research Societyof Japan, vol. 33, p. 611 (2008)
A-158
Ogiwara, N. et al.
Influence of magnetic fields on turbomolecular pumps
Vacuum, vol. 84, p. 718 (2009)(4th Vacuum and Surface Sciences Conferenceof Asia and Australia (VASSCAA-4))
A-159
Ogiwara, N. et al.
Vacuum system of the 3-GeV RCS in J-PARC
Vacuum, vol. 84, p. 723 (2009)(4th Vacuum and Surface Sciences Conferenceof Asia and Australia (VASSCAA-4))

Conference Reports and Books
C-001
Oigawa, H. et al.
Concept of waste management andgeological disposal incorporating
partitioning and transmutation technology
Actinide and Fission Product Partitioning andTransmutation, OECD 2010, p. 123(Proc. of 10th Information Exchange Meetingon Actinide and Fission Product Partitioning
and Transmutation)
C-002
Kikuchi, K. et al.
Material development in lead-bismuth
spallation target system
Actinide and Fission Product Partitioning
and Transmutation, OECD 2010, p. 315(Proc. of 10th Information Exchange Meetingon Actinide and Fission Product Partitioning
and Transmutation)
C-003
Sasa, T. et al.
Status of J-PARC transmutation experimental
facility

Actinide and Fission Product Partitioning andTransmutation, OECD 2010, p. 349(Proc. of 10th Information Exchange Meetingon Actinide and Fission Product Partitioning
and Transmutation)
C-004
Kurata, Y. et al.
Results of corrosion tests in liquid PbBi at JAEA; Temperature and oxygen
concentration dependence, and corrosion
properties of Si-enriched steels
Actinide and Fission Product Partitioning andTransmutation, OECD 2010, (CD-ROM)(Proc. of 10th Information Exchange Meetingon Actinide and Fission Product Partitioning
and Transmutation)
C-005
Obayashi, H.
Flow measurement of high temperature liquid
metal using ultrasonic doppler profiling
Actinide and Fission Product Partitioning andTransmutation, OECD 2010, (CD-ROM)(Proc. of 10th Information Exchange Meetingon Actinide and Fission Product Partitioning
and Transmutation)
C-006
Sasa, T. et al.
Continuous-energy cross-section library
based on JENDL high energy file 2007
Actinide and Fission Product Partitioning andTransmutation, OECD 2010, (CD-ROM)(Proc. of 10th Information Exchange Meetingon Actinide and Fission Product Partitioning
and Transmutation)
C-007
Sugawara, T. et al.
Importance of reactor physics experimentusing MA-bearing fuelActinide and Fission Product Partitioning andTransmutation, OECD 2010, (CD-ROM)(Proc. of 10th Information Exchange Meetingon Actinide and Fission Product Partitioning
and Transmutation)
C-008
Sasa, T. et al.

J-PARC Annual Report 2009     Publications

79
Liquid-fuelled accelerator-driven
transmutation system
Actinide and Fission Product Partitioning andTransmutation, OECD 2010, (CD-ROM)(Proc. of 10th Information Exchange Meetingon Actinide and Fission Product Partitioning
and Transmutation)
C-009
Sugawara, T. et al.
Investigation of beam window structure foraccelerator-driven system
Actinide and Fission Product Partitioning andTransmutation, OECD 2010, (CD-ROM)(Proc. of 10th Information Exchange Meetingon Actinide and Fission Product Partitioning
and Transmutation)
C-010
Takei, H. et al.
Evaluation of the acceptable frequency ofbeam trips based on thermal responses of
the ADS reactor system
Actinide and Fission Product Partitioning andTransmutation, OECD 2010, (CD-ROM)(Proc. of 10th Information Exchange Meetingon Actinide and Fission Product Partitioning
and Transmutation)
C-011
Tatsumoto, H. et al.
Forced convection heat transfer of subcooled
liquid nitrogen in horizontal tube
AIP Conf. Proc., vol. 985, p. 665 (2008)(2007 Cryogenic Engineering Conference andInternational Cryogenic Materials Conference(CEC-ICMC 2007))
C-012
Tatsumoto, H. et al.
Thermal stress analysis for a transfer line ofhydrogen moderator in J-PARC
AIP Conf. Proc., vol. 985, p. 1225 (2008)(2007 Cryogenic Engineering Conference andInternational Cryogenic Materials Conference(CEC-ICMC 2007))
C-013
Miyake, Y. et al.
Ultra slow muon project at J-PARC, MUSE
AIP Conf. Proc., vol. 1104, p. 47 (2009)(4th International Conference on Laser Probing)C-014
Arai, M. et al.
Neutron Imaging and Applications
Neutron Scattering Applications andTechniques, Springer Science 2009, p13
C-015
Ida, M. et al.
Numerical verification of cavitation
suppression by gas microbubble injection

Proceedings of 2008 Annual Meeting, Japan
Society of Fluid Mechanics (CD-ROM), p. 4
(2008)
C-016
Hotchi, H. et al.
Status of the J-PARC 3GeV RCS
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 4
(2008)
C-017
Morishita, T.
Recent progress in beam commissioning of
J-PARC linac
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 81(2008)
C-018
Suzuki, T. et al.
Development of J-PARC linac/RCS MPS sub
system
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 84(2008)
C-019
Hayashi, N. et al.
The Status of the J-PARC RCS beam monitor
system
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 243(2008)
C-020
Mio, K. et al.
Radiation resistance of vacuum equipment
in J-PARC RCS
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 252(2008)
C-021
Takahashi, H. et al.
The Status of the timing system for J-PARC
Linac/RCS
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 262(2008)
C-022
Kawase, M. et al.
Design of the control application tools for
J-PARC 3GeV RCS
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear

Accelerator Meeting in Japan (CD-ROM), p. 274(2008)
C-023
Tamura, F. et al.
Commissioning of beam acceleration in
J-PARC RCS and MR
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 337(2008)
C-024
Schnase, A. et al.
Cavity voltage calibration for J-PARC Ring RF
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 340(2008)
C-025
Hikichi, Y. et al.
Change in sensitivity of Pirani vacuum gaugein J-PARC RCS
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 343(2008)
C-026
Suganuma, K. et al.
A Tensile test of vacuum fired titanium
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 346(2008)
C-027
Takayanagi, T. et al.
Performance of the painting injection of the
3-GeV RCS in J-PARC
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 352(2008)
C-028
Ueno, T. et al.
Electro-magnetic compatibility for the IGBT
based large current power supply
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 355(2008)
C-029
Yamamoto, M. et al.
Longitudinal particle simulation for J-PARC
RCS
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 358(2008)

Publications     J-PARC Annual Report 2009

80
C-030
Kanazawa, K. et al.
Influence of magnetic field on
turbomolecular pumps
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 391(2008)C-037
Ao, H. et al.
Status of the ACS cavity development for the
J-PARC linac energy upgradeProc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 494(2008)

C-031
Hasegawa, K. et al.
HOM analysis of magnetic alloy cavity
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 394(2008)

C-038
Hirano, K. et al.
High power test of the first ACS module for
the J-PARC linac
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 497(2008)

C-032
Suzuki, H. et al.
DATA collection using memory area of PLC
touch panel for J-PARC linac RF
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 467(2008)
C-033
Fang, Z, et al.
Auto-tuning and Q-value monitoring of RF
cavities at the J-PARC linac
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 476(2008)
C-034
Hori, T. et al.
Present status of the 972 MHz RF test standfor J-PARC 2008
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 482(2008)
C-035
Yamazaki, M. et al.
Present status of RF source operation at
J-PARC linac
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 485(2008)
C-036
Kobayashi, T. et al.
Pulse-by-pulse switching of beam loading
compensation in J-PARC linac LLRF
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 488(2008)

C-039
Sato, S. et al.
Beam energy measurement at J-PARC linac
Proc. of 5th Annual Meeting of Particle
Accelerator Society of Japan and 33rd Linear
Accelerator Meeting in Japan (CD-ROM), p. 500(2008)
C-040
Koseki, T.
Commissioning status of J-PARC MR
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1
(2009)
C-041
Tomizawa, M. et al.
Slow extraction from J-PARC main ring
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 30(2009)
C-042
Sato, Y. et al.
Construction and beam commissioning of
J-PARC hadron experimental facility
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 70(2009)
C-043
Takahashi, H. et al.
Large vacuum chamber pentagon at J-PARC
hadron target station
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 73(2009)
C-044
Watanabe, H.
Construction of a neutral KL beamline for the
J-PARC KOTO experimentProc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 76(2009)

C-045
Toyoda, A. et al.
Development of OTR beam profile monitor
for J -PARC hadron beamline (4)Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 130(2009)
C-046
Sako, H. et al.
Suppression of beam loss at the bending
magnet of the first arc in the J-PARC linac
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 217(2009)
C-047
Yamamoto, M. et al.
Longitudinal Particle Simulation for J-PARC
RCS
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 247(2009)
C-048
Toyama, T. et al.
Operating experiences of the J-PARC MR BPMs
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 250(2009)
C-049
Yamanoi, Y. et al.
Development of vacuum windows for J-PARC
hadron beamline
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 272(2009)
C-050
Sato, K. et al.
Development of IPM for J-PARC MR
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 292(2009)
C-051
Sato, K. et al.
Present status of the J-PARC MR BLM system
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 295(2009)
C-052
Sato, S. et al.
Tuning of MEBT-Chopper by using wire
scanner monitor
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 298(2009)
C-053
Takano, J. et al.

J-PARC Annual Report 2009     Publications

81
Measurement of Beta Function of the J-PARC
MR
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 301(2009)

Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 372(2009)

C-054
Takano, J. et al.
Dispersion Measurement of the J-PARC MR
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 304(2009)

C-062
Ogitsu, T. et al.
Commissioning of Superconducting
Combined Function Magnet System for
J-PARC Neutrino Beam Line
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 412(2009)

C-055
Wei, G. et al.
Beam tuning of injection and fast extractionof J-PARC MR
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 307(2009)

C-063
Odagiri, J. et al.
Application of epics on F3RP61 to accelerator
control
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 435(2009)

C-056
Tani, N. et al.
Present status of survey and alignment for
J-PARC
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 317(2009)

C-064
Kamikubota, N. et al.
Evolution of device applications during
J-PARC MR beam-commissioning
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 527(2009)

C-057
Yoshimura, K. et al.
Measurement of beam extinction at J-PARC
50 GeV PS
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 356(2009)

C-065
Iitsuka, T. et al.
Archive data display system of J-PARC MR
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 530(2009)

C-058
Yoshii, M. et al.
The status of J-PARC Ring RF systems
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 362(2009)

C-066
Nemoto, H. et al.
Development of Monitoring System for
Network Switches and UPS Units Using EPICS
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 533(2009)

C-059
Tamura, F. et al.
Longitudinal Painting by Using Large
Amplitude Second Harmonic RF
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 366(2009)

C-067
Takagi, M. et al.
Control of the J-PARC slow extraction line
based on embedded epics
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 536(2009)

C-060
Nomura, M. et al.
Impedance measurements of RF cavities in
J-PARC Synchrotrons
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 369(2009)

C-068
Akiyama, A. et al.
Accelerator protection system of the MR
division of J-PARC using embeded epics
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 539(2009)

C-061
Ohmori, C. et al.
Upgrade scenario of J-PARC ring RF

C-069
Nemoto, H. et al.
Development of J-PARC PPS Monitoring

System for J-PARC Accelerator Control System
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 542(2009)
C-070
Mochiki, K. et al.
Effect of quadrupoles electromagnets forripple removal of slow extraction (from thedata of KEK 12 GeV PS)
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 548(2009)
C-071
Watanabe, Y. et al.
Suppression scheme of COD variation causedby switching ripple in J-PARC 3GeV Dipole
Magnet Power Supply
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 551(2009)
C-072
Igarashi, S. et al.
Magnetic field ripple measurement of the
J-PARC MR main magnets
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 557(2009)
C-073
Okamura, K. et al.
Development of the magnet power supply
for the slow beam extraction from the J-PARC
main ring
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 560(2009)
C-074
Muto, R. et al.
Development of the magnetic septa for theslow beam extraction from the J-PARC Main
Ring
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 566(2009)
C-075
Suganuma, K. et al.
Improvement of electric strength for highvoltage connectors in J-PARC RCS kicker
system
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 569(2009)
C-076
Motohashi, S. et al.
Improvement of PLC-based data acquisition
system for beam loss monitors of the J-PARC
main ringPublications     J-PARC Annual Report 200982
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 684(2009)

Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 839(2009)

C-077
Ito, T. et al.
Trouble report for J-PARC DTL and SDTL
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 690(2009)

C-085
Oguri, H. et al.
Operation status of the J-PARC H– ion source
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 842(2009)

C-078
Hasegawa, K. et al.
Status of the J-PARC RFQ
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 693(2009)

C-086
Namekawa, Y. et al.
Cesium seeding experiment for J-PARC H–
ion source
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 845(2009)

C-079
Kiyomichi, A. et al.
Development of Spill Control System for the
J-PARC Slow Extraction (II)Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 696(2009)

C-087
Uota, M. et al.
The present status of vacuum system of
J-PARC main ring and 3-50 beam transport
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 974(2009)

C-080
Agari, K. et al.
Design and Development of Beam Dump for
J-PARC Hadron-hall [3]Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 699(2009)

C-088
Kondo, Y. et al.
Design of an RF coupler for the J-PARC RFQ
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1038
(2009)

C-081
Miura, A. et al.
Design of beam diagnostic systems forenergy upgraded linac
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 733(2009)

C-089
Naito, F. et al.
Study of the ACS linac with the direct RFpower supply system
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1041
(2009)

C-082
Yoshimoto, M. et al.
Reconstruction of the 2-dimensitonal beamprofile at longitudinal phase space with
tomography method in J-PARC RCS and MR
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 737(2009)C-090
Ao, H. et al.
Fabrication of the ACS R&D module for the
J-PARC linac upgradeProc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1044
(2009)

C-083
Yamada, S. et al.
Analysis of J-PARC main ring orbit data using
singular value decomposition
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 741(2009)
C-084
Ikegami, K. et al.
A Survey of optimal filament shape in the
J-PARC H– ion source

C-091
Morishita, T. et al.
Engineering design of RFQ at J-PARC linac
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1047
(2009)
C-092
Morishita, T. et al.
RF simulation for RFQ designing at J-PARC
linac
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1050

(2009)
C-093
Fang, Z, et al.
Recent progresses in the LLRF FPGA control
system of the J-PARC linac
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1053
(2009)
C-094
Hirano, K. et al.
Coupling factor adjustment of the ACS
module by using the reflector
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1056
(2009)
C-095
Chishiro, E. et al.
972MHz RF sources for J-PARC high energy
linacProc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1059
(2009)
C-096
Kawamura, M. et al.
Present status of klystron power supply
systems for J-PARC linac 2009
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1062
(2009)
C-097
Kobayashi, T. et al.
Automatic frequency matching for cavity
warming-up in J-PARC linac digital LLRF
control
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1065
(2009)
C-098
Kobayashi, T. et al.
972-MHz RF digital feedback control system
for J-PARC linac
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1068
(2009)
C-099
Fukui, Y. et al.
Data Acquisition System of the 972MHz
Klystron Test Stand for J-PARC LINAC
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1071
(2009)
C-100
Suzuki, H. et al.
The ACS TUNER controller development
Proc. of 6th Annual Meeting of Particle

J-PARC Annual Report 2009     Publications

83
Accelerator Society of Japan (CD-ROM), p. 1074
(2009)

Proc. of 11th European Particle Accelerator
Conf. (EPAC '08) (CD-ROM), p. 1131 (2008)

C-101
Schnase, A. et al.
Core buckling position measurement for
J-PARC RCS cavity
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1077
(2009)

C-109
Sugawara, T. et al.
Recent activities for accelerator driven
system in JAEA
Proc. of International Conference on Advanced
Nuclear Fuel Cycle; Sustainable Options &Industrial Perspectives (Global 2009) (CDROM), p. 1782 (2009)

C-102
Shimada, T. et al.
Measurement of thermal deformation ofmagnetic alloys cores for RF cavities
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1080
(2009)
C-103
Takahashi, T. et al.
3D electromagnetic field analysis of RF
accelerating structure loaded with oil-cooledmagnetic metal cores
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1107
(2009)
C-104
Miyahara, M.
Considerations about the constructionof an accelerator tunnel and the groundconditions in the seaside site
Proc. of 6th Annual Meeting of Particle
Accelerator Society of Japan (CD-ROM), p. 1143
(2009)
C-105
Toyoda, A. et al.
First light for optical transition radiation
monitor at the J-PARC
Proc. of DIPAC09, p. 372 (2009)
C-106
Schnase, A. et al.
J-PARC RCS non-linear frequency sweep
analysis
Proc. of 11th European Particle Accelerator
Conf. (EPAC '08) (CD-ROM), p. 346 (2008)
C-107
Yamamoto, M. et al.
Acceleration voltage pattern for J-PARC RCS
Proc. of 11th European Particle Accelerator
Conf. (EPAC '08) (CD-ROM), p. 379 (2008)
C-108
Hiroki, S. et al.
Multi-wire profile monitor for J-PARC 3 GeV
RCS

C-110
Minato, K. et al.
Recent research and development on
partitioning and transmutation by doublestrata fuel cycle concept in JAEA
Proc. of International Conference on Advanced
Nuclear Fuel Cycle; Sustainable Options &Industrial Perspectives (Global 2009) (CDROM), p. 504 (2009)
C-111
Sugawara, T. et al.
Improvement effect of neutronics design
accuracy by conducting MA-loaded criticalexperiments in J-PARC
Proc. of International Conference on the Physics
of Reactors, Nuclear Power; A Sustainable
Resource (PHYSOR '08) (CD-ROM), p. 8 (2008)
C-112
Shiotsu, M. et al.
Forced convection heat transfer tosupercritical fluids
Proc. of International Cryogenic Engineering
Conference 22 (ICEC-22) and International
Cryogenic Materials Conference 20 (ICMC2008), p. 359 (2008)
C-113
Tatsumoto, H. et al.
Forced convection heat transfer of nitrogenat supercritical pressure
Proc. of International Cryogenic Engineering
Conference 22 (ICEC-22) and International
Cryogenic Materials Conference 20 (ICMC2008), p. 383 (2009)
C-114
Tatsumoto, H. et al.
Performance test of a helium refrigerator forthe cryogenic hydrogen system in J-PARC
Proc. of International Cryogenic Engineering
Conference 22 (ICEC-22) and International
Cryogenic Materials Conference 20 (ICMC2008), p. 711 (2009)
C-115
Tatsumoto, H. et al.

Commissioning of the cryogenic hydrogensystem in J-PARC; First cool-down operation
with helium
Proc. of International Cryogenic Engineering
Conference 22 (ICEC-22) and International
Cryogenic Materials Conference 20 (ICMC2008), p. 717 (2009)
C-116
Aso, T. et al.
Commissioning of the cryogenic hydrogensystem in J-PARC; Preliminary operation byhelium gas
Proc. of International Cryogenic Engineering
Conference 22 (ICEC-22) and International
Cryogenic Materials Conference 20 (ICMC2008), p. 741 (2009)
C-117
Hasegawa, K. et al.
Operating experience of the J-PARC Linac
Proc. of 24th Int. Linear Accelerator Conf.
(LINAC 2008) (CD-ROM), p. 55 (2009)
C-118
Oigawa, H. et al.
Research and development programme on
ADS in JAEA
Proc. of 5th International Workshop on the
Utilization and Reliability of High Power Proton
Accelerators (HPPA-5), p. 387 (2008)
C-119
Hayashi, N.
Commissioning status of the rapid-cycling
synchrotron at J-PARC
Proc. of 16th Pacific Basin Nuclear Conf. (PBNC16) (CD-ROM), p. 6 (2008)
C-120
Iwamoto, Y. et al.
Thick target neutron yield at 0 degree by 250
and 350 MeV protons
Proc. of 8th Specialists' Meeting on Shielding
Aspects of Accelerators, Targets and Irradiation
Facilities (SATIF-8), p. 195 (2010)
C-121
Ida, M. et al.
Suppression of mercury cavitation by gas
bubble injection
Proceedings of the 21st Computational
Mechanics Conference (CD-ROM), p. 572 (2008)
C-122
Igarashi, Y. et al.
An integrated data acquisition system for
J-PARC hadron experiment
Real Time Conference, 2009. RT '09. 16th IEEENPSS, vol. 5321566, p. 472 (2009)

Publications     J-PARC Annual Report 200984

JAEA Reports
J-001
Yamada, K. et al.
Ion generation method at TIARA ion implanter
JAEA-Conf 2008-005 (2008)
J-002
Nakamura, T. et al.
Development of two-dimensional scintillator
neutron detector using wavelength-shifting
fibres; Development of a compact detector
for iBIX instrument in J-PARC/MLF
JAEA-Research 2008-115 (2009)
J-003
Nakamura, T. et al.
Development for upgrading Japanese ENGIN-X type linear scintillation neutron detectors; Development of new ZnS scintillator,
light reflector and digital signal processing
module
JAEA-Research 2008-116 (2009)
J-004
Takei, H. et al.
Estimation of acceptable beam trip frequencies of accelerators for ADS and comparison
with performances of existing accelerators
JAEA-Research 2009-023 (2009)
J-005
Sugawara, T. et al.
Investigation of safety for accelerator driven
system; Investigation for abnormal eventand safety analysis for accident event
JAEA-Research 2009-024 (2009)
J-006
Sugawara, T. et al.
Investigation of nuclear design accuracy fortransmutation systems and effect of MA-

KEK Report
K-001
Molodozhentsev, A. et al.
Beam dynamics and low loss operation of
the J-PARC Main Ring
KEK_Preprint, vol. 2009, p. 1 (2009)

loaded experiments
JAEA-Research 2009-033 (2009)
J-007
Arai, M. et al.
Proceedings of the International Advisory
Committee on Biomolecular Dynamics
Instrument DNA and the Workshop on
Biomolecular Dynamics Backscattering
Spectrometers; February 27-29, 2008, J-PARC
Center, Japan Atomic Energy Agency, Tokai,
Ibaraki, Japan
JAEA-Review 2008-036 (2009)
J-008
Arai, M. et al.
Proceedings of the 2nd International Advisory Committee on Biomolecular Dynamics
Instrument DNA in MLF at J-PARC; November
12 - 13, 2008, J-PARC Center, Japan Atomic
Energy Agency, Tokai, Ibaraki, Japan
JAEA-Review 2009-014 (2009)
J-009
Haga, K. et al.
Thermal hydraulic design of the mercury
target vessel
JAEA-Technology 2008-033 (2009)
J-010
Yamada, K. et al.
Ion generation method for TIARA Ion Implanter
JAEA-Technology 2008-090 (2009)
J-011
Kasugai, Y. et al.
Risk assessment of the mercury leak at Materials & Life Science Experimental Facility of
J-PARCJAEA-Technology 2009-010 (2009)
J-012
Mio, K. et al.
Development of radiation resistant PEEK
insulation cable
JAEA-Technology 2009-018 (2009)
J-013
Wakui, T. et al.
Fabrication of mercury target vessel
JAEA-Technology 2009-040 (2010)
J-014
Wakui, T. et al.
Structural design on mercury target vessel
JAEA-Technology 2009-041 (2010)
J-015
Sakai, K. et al.
Design, construction and operation ofgeneral control system of Materials and Life
Science Experimental Facility (MLF-GCS) in
J-PARCJAEA-Technology 2009-042 (2009)
J-016
Mio, K. et al.
Radiation resistance of vacuum equipment
in J-PARC RCS
JAEA-Technology 2009-064 (2010)
J-017
Sakai, K. et al.
Commissioning of operation and control for
Materials and Life Science Experimental Facility (MLF) in J-PARC
JAEA-Technology 2010-001 (2010)

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